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post #1 of 45 Old May 8th, 2009, 8:06 pm Thread Starter
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Fuel Consumption Question

Being a new member of this community, I have been reading, with envy, all of you that are getting 50 mpg (or close to it) with your LT's. I've put about 2000 miles on my '01 since I picked it up, and, according to the BC, the best I've gotten is around 42 mpg. It has been as poor as 35. I don't drive hard, still getting used the big girl. What an I doing wrong or what can I do to improve it? I have changed plugs, oil (3X), new tire on the rear, pumped them up, just about everything I can think of. I am going to have the 60K service done just prior to the rally. HELP!

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post #2 of 45 Old May 8th, 2009, 8:15 pm
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Re: Fuel Consumption Question

A lot of things can effect fuel usage, your weight, the windshield being up, driving conditions like stop & go. 42 is not that bad. She's also got 60k and she's 8 years old.

nonetheless has the airfilter been changed? fuel filter? that could have an effect.
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post #3 of 45 Old May 8th, 2009, 8:24 pm
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Re: Fuel Consumption Question

42 is about what I get with my '03.

Ran across South Dakota a little on the fast side, most of the time it was over 100, and I got arond 28 mpg.

Scenery went by in a hurry.

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post #4 of 45 Old May 8th, 2009, 8:26 pm
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Re: Fuel Consumption Question

Just completed my 24K on my 2003. All fuels, air filter, fuel filter, adjusted valves (3 buckets), tranny, FD fluid change, plugs. Was averaging 39 mpg before - averaging 39 mpg now. Must be my 1/8 th ton plus pay load.
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post #5 of 45 Old May 8th, 2009, 8:39 pm
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Re: Fuel Consumption Question

Take a trip, get the actual gas mileage. If you have GPS, use the GPS mileage for the computation; the odometer/speedometer have accuracy issues so use the trip meter mileage if you don't have GPS. Fill-up with the bike on the sidestand to get more fuel in the tank.

Use this link click here to reset your BC. I normally get 48-52 mpg (city commute - highway); the Remus exhaust/RhineWest chip affects are still under analysis.

Some have mentioned the oxygen sensor as causing poor mileage; you might consider changing it out. Do a search to find the part number for a sensor costing less than your first-born male child or limbs at the dealership; HOW has instructions on how to change it out.

Hope this helps.

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post #6 of 45 Old May 8th, 2009, 9:11 pm
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Re: Fuel Consumption Question

I just looked back on 2 years of receipts and they look like mostly in the high 40's and at least one that was 40. I do ride variably. Sometimes really on her and some times not.
I always use a name brand premium (Mobile, Shell, BP).

Let's ride sometime.

Jer

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post #7 of 45 Old May 8th, 2009, 9:27 pm Thread Starter
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Re: Fuel Consumption Question

Quote:
Originally Posted by jers99lt
I just looked back on 2 years of receipts and they look like mostly in the high 40's and at least one that was 40. I do ride variably. Sometimes really on her and some times not.
I always use a name brand premium (Mobile, Shell, BP).

Let's ride sometime.

Jer
I'd love to ride sometime. Find some good places around here. I also use only BP. I got fuel at a Shell one time and my mileage dropped to 34. Filled her up at a BP and immediately went back up to 41. Won't do that again. Send me a PM and let me know where you're at. Figure out when we can go somewhere.

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post #8 of 45 Old May 8th, 2009, 9:29 pm
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Re: Fuel Consumption Question

A couple of years ago the dealer changed the fuel mapping on my LT because it had a hesitation when i would try to accelerate. I was told that I would have use premium fuel only from then on. Just the other day I accidentally put regular gas in the tank and my mileage went from 38-39 mpg at 70 on the expressway to 45-46 mpg. Not sure why but I'm not complaining.
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post #9 of 45 Old May 8th, 2009, 9:35 pm Thread Starter
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Re: Fuel Consumption Question

Quote:
Originally Posted by JDW
A couple of years ago the dealer changed the fuel mapping on my LT because it had a hesitation when i would try to accelerate. I was told that I would have use premium fuel only from then on. Just the other day I accidentally put regular gas in the tank and my mileage went from 38-39 mpg at 70 on the expressway to 45-46 mpg. Not sure why but I'm not complaining.
It's interesting that you said this. I said in my last post that I got really poor mileage when I put Shell gas in it. I always use premium, and the Shell station had 93 octane (about as high as I have seen). I went to Iowa for on a trip and all they had was 91, but the pump didn't work. So I had to put 89 in it. I was a bit worried about that, but my mileage was as good as I have seen. My wife thought we must have been going downhill coming home .

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post #10 of 45 Old May 8th, 2009, 10:14 pm
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Re: Fuel Consumption Question

I've noticed some stations advertise "no ethynol"; Citgo and Conoco are two that come to mind. I won't buy Citgo but may try Conoco just to see what happens.

What is the difference in BTU content with/without ethynol? Anyone know? Anyone care?

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post #11 of 45 Old May 8th, 2009, 10:22 pm Thread Starter
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Re: Fuel Consumption Question

Actually, I do. Ethanol has 80% of the BTU content of gasoline. So if a fuel has 10% ethenal, you lose about 2% on the whole. Probably about 1 mpg in the range we are discussing. Now, if I only knew how to spell it

+1 on Citgo. I won't go near 'em.

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post #12 of 45 Old May 8th, 2009, 11:34 pm
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Re: Fuel Consumption Question

Rode from Tennessee to north east Ohio today with the wife and all bags full, including the top bag on the luggage rack. Ran some two lane stuff in southern KY and then back on I-71 for the rest of the trip. Went 300 miles and took 5.9 gallons which resulted in 50.8 mpg. Not too bad at all. I drive with the cruise control to the maximum extent possible and keep the windshield as low as comfortable, but not all the way down. For what it's worth, the BC told me I was only getting 45 mpg. It has always been 3-5 miles per gallon pessimistic.

I have found that cold weather, from the 40s down to the mid 20s really sucks the fuel as well as strong headwind. I have gotten 35 in west Texas in a cold wind and also 34 across Iowa in a 40 mph headwind/crosswind.
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post #13 of 45 Old May 9th, 2009, 6:41 am
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Re: Fuel Consumption Question

Quote:
Originally Posted by seahorst
Being a new member of this community, I have been reading, with envy, all of you that are getting 50 mpg (or close to it) with your LT's. I've put about 2000 miles on my '01 since I picked it up, and, according to the BC, the best I've gotten is around 42 mpg. It has been as poor as 35. I don't drive hard, still getting used the big girl. What an I doing wrong or what can I do to improve it? I have changed plugs, oil (3X), new tire on the rear, pumped them up, just about everything I can think of. I am going to have the 60K service done just prior to the rally. HELP!
Have you checked your mileage on several consecutive tanks to confirm that the BC readings are correct? It could be that the BC is not calibrated properly. I would first confirm that the data is correct before looking at solutions.

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post #14 of 45 Old May 9th, 2009, 6:47 am
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Re: Fuel Consumption Question

I should mention that Emil doesn't drink too much as long as we're only pushing him around 60 mph. He will run as fast as you can stand to hang on, but after you make him go over 70 and close in on 80 he must get nervous because he starts drinking more.
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post #15 of 45 Old May 9th, 2009, 7:12 am
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Re: Fuel Consumption Question

I've notice in colder weather, 40 and below, that my gas mileage was about the same...40 and below. When it warmed up this spring and the windshield came down an inch or so, the mileage started to climb. On a nice cruising backroad where I can hold 55 to 60 mph without starting and stopping the bike will register 50+ mpg. On the highway at speeds ranging from 70 to 80 mph, the bike drinks more but I can still get mid 40's or better in the summer.

One thing that I did notice....I had a sticky throttle cable a few months ago. It was very difficult to smoothly apply the gas and the bike was slow to release the throttle. Once I fixed the throttle cable issue my gas mileage jumped up about 3-5 mpg instantly. I cut my brown wire last week and the bike runs much smoother, however, it looks like I may be losing 2-3 mpg, but I can't say for certain if that was the cause.

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post #16 of 45 Old May 9th, 2009, 12:00 pm
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Re: Fuel Consumption Question

I have 2000 LT. No changes made, just normal service by myself.


My average MPG is between 48 and 53 in normal driving.

I just made a MPG test 2 days ago.
I was driving 550 miles in that day. Some 170 miles speed was between 80 and 105 mph nice curvy roads. Rest was more or less simple highway, speed was between 70 and 75 mph. Fuel consumption during that trip was 48 MPG.

Speed was according to its own speedo (not gps).

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post #17 of 45 Old May 9th, 2009, 4:13 pm
 
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Re: Fuel Consumption Question

How many miles does the computer tell you can go when you fill it to the top.... yr 2000.
Yesterday when I filled it said 335, and that is at a Shell station that does not add gasahol and 91 premium. Almost all other stations in the area add gasahol and it cuts my mileage 5 to 10+%.
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post #18 of 45 Old May 9th, 2009, 4:59 pm
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Re: Fuel Consumption Question

I can go up to 47mpg if I ride only on the motor way (also in winter with shield fully up, lateral deflectors out, etc...), provided that I don't go faster than the 80 Mph limit.

Since it happens rarely and because I also have some short city bits to ride on, I usually range in the 40mpg with my '06 LT (always in "winter mode", no experience yet of the summer mode).

The BC is usually reporting the mileage well, it's normally optimistic by 5-8% but not more.

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post #19 of 45 Old May 9th, 2009, 5:06 pm
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Re: Fuel Consumption Question

Rode 100 miles today into a strong, steady head wind and got 44 mpg. Down from the usual upper 40's.

Jer ( close to Rt.59 and Mack Rd. )

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post #20 of 45 Old May 9th, 2009, 5:57 pm
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Re: Fuel Consumption Question

hmmm, I went on a 163 mile ride here this morning with the GF..

BC said I was making about 45.3 MPG

old school based upon the gty used to refill, it was 56.7 MPG.


someone 'splain that!

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post #21 of 45 Old May 9th, 2009, 6:15 pm
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Re: Fuel Consumption Question

Uhm, I never base my fuel consumption on single cases. I pretty much learned that you can easily miss one full litre of gas if the bike is in a different position, if the pump is stopping too ealry, if.... whatever.

In a tank of less than 20 litres, it makes for 5% of difference.

I have a nice tool to record my fuel/mileage included in the iPhone and I always consider the mileage as the average of the last 5 refills or more.

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post #22 of 45 Old May 11th, 2009, 12:27 am
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Re: Fuel Consumption Question

Average lately is 55 mpg with GPS where OD said 54 mpg and BC said 52. Always 2-up, 65 mph average, mountains (Cascades usually) a norm.

I attribute my generally non-aggressive driving nature to my decent economy and low failure average.

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post #23 of 45 Old May 11th, 2009, 7:14 am
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Re: Fuel Consumption Question

2001 LT. Just did 517 miles 2 up on mixed roads. Secondary roads, some with twisties, interstate, up and down a couple mountains. According to BCS 47.4 mpg. Mileage may go up when she gets broken in. Will turn 10 K on way to Harbor Freight to order 1200 lb pneumatic lift.

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post #24 of 45 Old May 11th, 2009, 9:20 am
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Re: Fuel Consumption Question

2006 K1200LT average economy of 37.3 over 26835 miles over 29 months.

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post #25 of 45 Old May 11th, 2009, 4:58 pm
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Re: Fuel Consumption Question

Quote:
Originally Posted by browad
2006 K1200LT average economy of 37.3 over 26835 miles over 29 months.
Wow, that is really poor fuel mileage. Do you run the lady pretty hard? Have a lot of ethanol in your fuel?

I'd have to check my spreadsheet, but I believe I'm averaging a little more than 47 MPG over the 10,500 miles I've ridden my 2007.

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post #26 of 45 Old May 11th, 2009, 5:19 pm
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Re: Fuel Consumption Question

Quote:
Originally Posted by Voyager
Wow, that is really poor fuel mileage
Well, it depends on much stop & go you do.

We tend to evaluate mileage on the LT based on long-distance touring rides (which is what the bike is designed for) but maybe browad rides her in town everyday to go to work

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post #27 of 45 Old May 11th, 2009, 8:39 pm
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Re: Fuel Consumption Question

Quote:
Originally Posted by Voyager
Wow, that is really poor fuel mileage. Do you run the lady pretty hard? Have a lot of ethanol in your fuel?
Probably a combination of commuter (daily driver), >75mph highway speeds, ethanol, and 87 octane. Trying out other octanes now.

A 6th overdrive gear would help. I did 255.4 mostly interstate miles the other weekend and averaged 41 mpg @ 65 mph, according to the BC. Manual calculations showed the same. IIRC when a friend and I did our 6000 mile Canada journey I got ~37-38 mpg, and that was mostly highway upwards of 75 mph.

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post #28 of 45 Old May 11th, 2009, 10:59 pm
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Re: Fuel Consumption Question

Done 2 3500 mile trips in the last two seasons ... 2 up riding pulling 350# worth of trailer. Averaged 44.7 one trip, 46.9 the other.

Worst is dead of winter when COLD .. 32/34 mpg
BEST, summer at high altitude ... gotten 62 mpg on a 150 mile leg running at 7000 to 9000 foot elevation.

Average 48 to 52 most of the time.

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post #29 of 45 Old May 12th, 2009, 12:35 am
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Re: Fuel Consumption Question

Quote:
Originally Posted by browad
Probably a combination of commuter (daily driver), >75mph highway speeds, ethanol, and 87 octane. Trying out other octanes now.

A 6th overdrive gear would help. I did 255.4 mostly interstate miles the other weekend and averaged 41 mpg @ 65 mph, according to the BC. Manual calculations showed the same. IIRC when a friend and I did our 6000 mile Canada journey I got ~37-38 mpg, and that was mostly highway upwards of 75 mph.

You have two clear reasons for your poor mileage:
-ethanol
-87 octane

On the otherway they are cheaper than higher octane. So is there any idea to change into more expensive fuel to get higher MPG? I do not know. By us only 95 and 98 octane are available, and price difference between them does not engourage to use 98. It would give better MPG, but total fuel costs would go up.

LT has already so long gearts that there is no idea about 6th overdrive gear. Too much weight/not enough torque for longer gear ratio. It is quite optima already.

Regards
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post #30 of 45 Old May 12th, 2009, 6:57 am
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Re: Fuel Consumption Question

Quote:
Originally Posted by leiboshi
You have two clear reasons for your poor mileage:
-ethanol
-87 octane

On the otherway they are cheaper than higher octane. So is there any idea to change into more expensive fuel to get higher MPG? I do not know. By us only 95 and 98 octane are available, and price difference between them does not engourage to use 98. It would give better MPG, but total fuel costs would go up.

LT has already so long gearts that there is no idea about 6th overdrive gear. Too much weight/not enough torque for longer gear ratio. It is quite optima already.

Regards
Leiboshi
Take note that in Europe the octane number is the RESEARCH octane number, which runs higher than our (R+M)/2 number by about 5 points. Our octane is the average of RESEARCH and MOTOR octane.

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post #31 of 45 Old May 12th, 2009, 3:14 pm
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I know I get really crappy milage on local stop and go riding... Usually mid to upper 30's at best...

Highway riding I have averaged at 47.5MPG and as low as 42.5MPG with a very stiff headwind ridding about 75 to 80 MPH...
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post #32 of 45 Old May 12th, 2009, 3:16 pm
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Re: Fuel Consumption Question

Quote:
Originally Posted by VRodPete
Take note that in Europe the octane number is the RESEARCH octane number, which runs higher than our (R+M)/2 number by about 5 points. Our octane is the average of RESEARCH and MOTOR octane.
Thanks. New info for me. Can you explain what means research octane and motor octane?

Regards
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post #33 of 45 Old May 13th, 2009, 8:41 am
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Re: Fuel Consumption Question

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Originally Posted by leiboshi
Thanks. New info for me. Can you explain what means research octane and motor octane?

Regards
Leiboshi
There are two separate tests for Research Octane Number (RON) and Motor Octane Number(MON). Wikipedia has a great explanation (note: iso-octane has a 100 RON, n-heptane has a 0 RON):

The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.

There is another type of octane rating, called Motor Octane Number (MON) or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, a higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern gasoline will be about 8 to 10 points lower than the RON. Normally fuel specifications require both a minimum RON and a minimum MON.

In most countries (including all of Europe and Australia) the "headline" octane rating, shown on the pump, is the RON, but in the United States, Canada and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 8 to 10 point difference noted above, the octane rating shown in the United States is 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in the US and Canada, is 91–92 in Europe. However most European pumps deliver 95 (RON) as "unleaded", equivalent to 90–91 US (R+M)/2, and some even deliver 98 (RON), 100 (RON), or 102 (RON).[2]

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post #34 of 45 Old May 13th, 2009, 2:59 pm
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Re: Fuel Consumption Question

Quote:
Originally Posted by VRodPete
There are two separate tests for Research Octane Number (RON) and Motor Octane Number(MON). Wikipedia has a great explanation (note: iso-octane has a 100 RON, n-heptane has a 0 RON):

The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.

There is another type of octane rating, called Motor Octane Number (MON) or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, a higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern gasoline will be about 8 to 10 points lower than the RON. Normally fuel specifications require both a minimum RON and a minimum MON.

In most countries (including all of Europe and Australia) the "headline" octane rating, shown on the pump, is the RON, but in the United States, Canada and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 8 to 10 point difference noted above, the octane rating shown in the United States is 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in the US and Canada, is 91–92 in Europe. However most European pumps deliver 95 (RON) as "unleaded", equivalent to 90–91 US (R+M)/2, and some even deliver 98 (RON), 100 (RON), or 102 (RON).[2]
Thanks VRodPete!

Sure I should have been clever enough to check that in wikipedia, but I wasn't.

Very good info.

We have 95, 98 and 100(? Shell VPower) available.

I have tried 98 in LT and in my car without noticeabe difference in fuel consumption or power addition. But in my wallet I have seen clear difference. So, I am using what factory propose: 95 is enough both both, car and LT.

Regards
Leiboshi
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post #35 of 45 Old May 13th, 2009, 3:14 pm
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Re: Fuel Consumption Question

I've noticed the same thing - when the weather gets hot my mileage goes up.

Quote:
Originally Posted by cealbrecht
I've notice in colder weather, 40 and below, that my gas mileage was about the same...40 and below. When it warmed up this spring and the windshield came down an inch or so, the mileage started to climb. On a nice cruising backroad where I can hold 55 to 60 mph without starting and stopping the bike will register 50+ mpg. On the highway at speeds ranging from 70 to 80 mph, the bike drinks more but I can still get mid 40's or better in the summer.

One thing that I did notice....I had a sticky throttle cable a few months ago. It was very difficult to smoothly apply the gas and the bike was slow to release the throttle. Once I fixed the throttle cable issue my gas mileage jumped up about 3-5 mpg instantly. I cut my brown wire last week and the bike runs much smoother, however, it looks like I may be losing 2-3 mpg, but I can't say for certain if that was the cause.

TBob
09 R1200 GSA
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post #36 of 45 Old May 18th, 2009, 4:58 pm
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Re: Fuel Consumption Question

Quote:
Originally Posted by TBob
I've noticed the same thing - when the weather gets hot my mileage goes up.
Every motor vehicle will experience a drop in fuel economy in cold weather. One key reason is that engines take longer to warm up to operating temperature, which means the engine management system will command richer fuel/air mixtures for a longer period of time. Until the coolant and catalytic converter are up to temperature, the engine cannot deliver its best economy.

Several smaller factors also reduce mileage in cold weather: higher initial rolling resistance from cold or underinflated tires, increased mechanical drag from cold lubricants, and higher use of energy-using accessories such as the seat/handlebar heater and headlights.

Then, cold air is denser than warmer air, which provides greater resistance to most vehicles at speeds above 40 MPH. Finally, in winter you'll mostly ride with the windshield fully up and the lateral winglets open.

The spring arrived here and my LT is already climbing from an average 40mpg to 45mpg

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post #37 of 45 Old May 20th, 2009, 11:57 am
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Re: Fuel Consumption Question

I have kept track of the consumption in my 2003 since I got it 2005 (yes, mine is an "it", I just don't feel any emotional attachment to it). I have gotten very close to 50 (+/- 5mpg) the whole time with a few outliers. I never carry a passenger and I accept that on things like the 100k foot ride many other riders could lap me if they wanted to.

I use either 89 or 91 octane fuel and keep the tires pretty hard as well.
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post #38 of 45 Old May 20th, 2009, 3:41 pm
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Re: Fuel Consumption Question

Quote:
Originally Posted by seahorst
Being a new member of this community, I have been reading, with envy, all of you that are getting 50 mpg (or close to it) with your LT's. I've put about 2000 miles on my '01 since I picked it up, and, according to the BC, the best I've gotten is around 42 mpg. It has been as poor as 35. I don't drive hard, still getting used the big girl. What an I doing wrong or what can I do to improve it? I have changed plugs, oil (3X), new tire on the rear, pumped them up, just about everything I can think of. I am going to have the 60K service done just prior to the rally. HELP!
Living and riding in Illinois as you do, I usually average 42-44mpg but it varies. For example, over mothers day weekend, I rode from here to SE Minnesota and back. I got above 50mpg while riding some roads in Galena and then up the Mississippi to around Lacrosse, WI. No Interstate roads. When I slabbed it back to Chicago via I90, I got around 40. I think heavy crosswinds and pushing a lot of wind with the windscreen fully up at higher speeds on the interstate were the primary causes of the difference. I was one up.

Jim S.
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post #39 of 45 Old May 21st, 2009, 11:49 am
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Re: Fuel Consumption Question

I had a 2002 LTE with the stock windshield. I replaced it with the Cee Bailey, my mileage dropped 10%.
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post #40 of 45 Old May 22nd, 2009, 12:02 pm
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Smile Re: Fuel Consumption Question

Quote:
Originally Posted by seahorst
Being a new member of this community, I have been reading, with envy, all of you that are getting 50 mpg (or close to it) with your LT's. I've put about 2000 miles on my '01 since I picked it up, and, according to the BC, the best I've gotten is around 42 mpg. It has been as poor as 35. I don't drive hard, still getting used the big girl. What an I doing wrong or what can I do to improve it? I have changed plugs, oil (3X), new tire on the rear, pumped them up, just about everything I can think of. I am going to have the 60K service done just prior to the rally. HELP!
I've had two LT's, a 2002 and a 2006. Like you I would say I was a pretty conservative rider, liked to go fast, but didn't ride hard as far as acceleration. The best mileage I ever got as an average over a tankful, was maybe 45, usually more like 40 - 42. And that was using GPS mileage. IMHO, the way the guys on here brag about how hard and fast they go, and some say they get maybe 50mpg..... I'd take their claims with a big grain of salt.

I remember back in the 50's (I owned a gas station then) when the Volkswagen bug came out and owners were making outrageous claims about their mileage, I always figured "some people lie a lot."
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post #41 of 45 Old May 22nd, 2009, 12:28 pm
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Re: Fuel Consumption Question

Just curious why you would think people lie about their mileage. This is an annonymous forum so I can't for the life of me figure out why someone would lie about this.

MPG is like the air we breathe. It just is what it is. You fill the tank, you ride, and you read the BCS. It's that simple. I don't ride all that hard, I do like the twisties but am not a jack rabbit and I never drop out of the upper 40's one up without the sidecar.

If I remember correctly from what I've read on this forum the speedometer can be off by 10% but the odometer is accurate. Is this right?

Not sure what makes the difference but there it is.

Loren

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Loren

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post #42 of 45 Old May 22nd, 2009, 2:13 pm
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Smile Re: Fuel Consumption Question

Quote:
Originally Posted by leiboshi
You have two clear reasons for your poor mileage:
-ethanol
-87 octane

On the otherway they are cheaper than higher octane. So is there any idea to change into more expensive fuel to get higher MPG? I do not know. By us only 95 and 98 octane are available, and price difference between them does not engourage to use 98. It would give better MPG, but total fuel costs would go up.

LT has already so long gearts that there is no idea about 6th overdrive gear. Too much weight/not enough torque for longer gear ratio. It is quite optima already.

Regards
Leiboshi
Octane has absolutely zero - nothing to do with MPG. It only has an effect on engine pre-ignition.
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post #43 of 45 Old May 22nd, 2009, 2:15 pm
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Smile Re: Fuel Consumption Question

Quote:
Originally Posted by wa1200lt
Just curious why you would think people lie about their mileage. This is an annonymous forum so I can't for the life of me figure out why someone would lie about this.

Loren
It's an ego thing..... get real!
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post #44 of 45 Old May 22nd, 2009, 5:40 pm
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Re: Fuel Consumption Question

Quote:
Originally Posted by wa1200lt
Just curious why you would think people lie about their mileage. This is an annonymous forum so I can't for the life of me figure out why someone would lie about this.

Loren
I don't suspect people of lying about their mileage, but I have know many people who simply don't calculate it correctly. They will figure one tankful of gas and claim that as their "average" MPG. The variation from one tank to another can be quite large. You really need at least 5 consecutive tank fulls to begin to get a decent average. The consecutive part is important as that allows an error on one fill-up to be factored into the next fill-up.

As an example of this, I was cruising down the interstate today at 60 MPH with a fairly stiff tail-wind. I was running at 59 MPG, about 10 above my long-term average. If I happened to make a long run like this on one tank and then claimed that as my "average" mileage, I would be way off.

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post #45 of 45 Old May 23rd, 2009, 3:58 am
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Re: Fuel Consumption Question

Quote:
Originally Posted by Voyager
I don't suspect people of lying about their mileage, but I have know many people who simply don't calculate it correctly. They will figure one tankful of gas and claim that as their "average" MPG. The variation from one tank to another can be quite large. You really need at least 5 consecutive tank fulls to begin to get a decent average. The consecutive part is important as that allows an error on one fill-up to be factored into the next fill-up.
I absolutely agree and that's in fact what I wrote in my post #26 above.

For example, one of my winter refills was much different than the usual ones, because I wanted to re-fill in the gas station near home (where I have a fidelity program) and I had to stretch my mileage quite a lot since I was already low on fuel when I started my daily commuting (almost 100 miles) on the day before.

I ended up at the gas station with 250 miles done, 5,5 US gal refilled, for an average of about 45 mpg. Still in full winter setup (winglets open, windscreen up, cold climate), whereas I usually do 40mpg or less in winter.

'12 R 1200 RT
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