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seahabit
Jul 16th, 2009, 8:29 pm
Are you guys in the hot states running sae 40 motor oil during the summer?

If so, how is startup?

Clymers pg 48 oil and temperature chart
cfell
Jul 16th, 2009, 9:02 pm
Same multi-vis year round.

I won't mention the flavor.
DanMartin
Jul 16th, 2009, 10:21 pm
Pennzoil 20w-50 year round

dan
BEhrler
Jul 16th, 2009, 10:27 pm
With liquid coolant, thermostats, and cooling fans doesn't the engine run at the same temperature year round?
MattKas
Jul 17th, 2009, 4:28 am
15W50 Mobil or 20W50 Amsoil or 10W50 Castrol all syhntetic year around

Are you guys in the hot states running sae 40 motor oil during the summer?

If so, how is startup?

Clymers pg 48 oil and temperature chart
LAF
Jul 17th, 2009, 4:51 am
10-40 Winter, 20-50 Summer, Good ol fashion Dino Castrol flavor.
katnapinn
Jul 17th, 2009, 7:35 am
20/50 Castrol Full Synthetic year round here
Steve_R
Jul 17th, 2009, 12:34 pm
20/50W Synthetic year round.
katnapinn
Jul 17th, 2009, 6:23 pm
250/50W Synthetic year round.
Dang Steve .... Do you have to "Special Order" that weight :histerica
Steve_R
Jul 17th, 2009, 6:40 pm
Recheck my post. :p
cfell
Jul 17th, 2009, 7:15 pm
ibm keyboard.. made in a 3rd world country..
rcoolbaugh
Jul 17th, 2009, 7:25 pm
When I read this thread title I envisioned :

Step 1 : Park bike over storm drain ..... :D
haughty
Jul 17th, 2009, 10:31 pm
When I read this thread title I envisioned :

Step 1 : Park bike over storm drain ..... :D

If it was suthern* style, it would be
Park bike on tew by twelve over ditch..... :D

Citee peeple (yes spellin fer da phonics krowd) park over on of dem storm drains...

WHats a storm drain?

been too dry to have dem heah
rattler50
Jul 18th, 2009, 10:49 am
20W50 Castrol year round and I used the white jugs for catfishin'................. :D
Slim
Jul 19th, 2009, 9:15 am
amsoil 20-50 been runnin n harley for 60,000 plus miles wiff no problems only put 4500 on beemer with 20-50 also amsoil
Dick
Jul 19th, 2009, 10:00 am
amsoil 20-50 been runnin n harley for 60,000 plus miles wiff no problems only put 4500 on beemer with 20-50 also amsoil
+1 on the Amsoil. Been runnin' synth since back in the day, and ole Toad still likes it. Runnin' A-synth in the tranny and final drive also. Change all three at +/- 3K.
Voyager
Jul 19th, 2009, 8:21 pm
With liquid coolant, thermostats, and cooling fans doesn't the engine run at the same temperature year round?

No. Once the thermostat opens, the temperature will rise until the temperature differential between the radiators and the OAT is sufficient to reject the heat produced by the engine. The fans normally don't kick on until things are fairly hot so the engine can operate over a fairly wide temperature range from winter to summer.

Also, at engine start, the temp is a lot colder in the winter than in the summer, at least if you live north of the Mason-Dixon! That is where the winter weight oil really makes the difference.
BEhrler
Jul 19th, 2009, 8:52 pm
No. Once the thermostat opens, the temperature will rise until the temperature differential between the radiators and the OAT is sufficient to reject the heat produced by the engine. The fans normally don't kick on until things are fairly hot so the engine can operate over a fairly wide temperature range from winter to summer.

Also, at engine start, the temp is a lot colder in the winter than in the summer, at least if you live north of the Mason-Dixon! That is where the winter weight oil really makes the difference.

I was thinking more in comparison with an air cooled 4 stroke engine vs. liquid cooled engine. What would be the difference in the oil tempature between these two engines on a hot day then on a cold day? Then would that difference in oil temperature cause one to think about the 40 wt. oil described in the first thread on a hot day?