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Discussion Starter #1
I'm not all that confident to pull my gas tank off my '03 LT (106K) to change the air and fuel filter. Is it very difficult and anything I need to know besides what they have in the shop manual? I found shop manuals are really that accurate.
Second, I'm running Synthetic oil because it is a high performance engine and thought It would run better. I was told by the dealer, I'm wasting my money and just use standard oil. Any opinions on this from this group?

Thanks
 

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Air filter can be replaced by simply shifting the tank back without its removal.
Fuel filter much more difficult, be certain you have all the tank gaskets and internal replacement hoses.
Proper synthetic lubricants are a far superior lubricant and in fact is what BMW now uses on the new K bikes. At 106k I'd keep using it in all three holes.
 

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While you are changing out the fuel filter, replace all the fuel hoses on the fuel pump assembly with these hoses, Flexible In-Tank Fuel Hose Kit . The OEM rubber hoses are prone to degrade over time and once a small crack develops you will be stranded on the side of the road. How do you think I know that??? The above hoses from Beemer Boneyard are cheap and work perfect.
 
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As long as your bike has the quick disconnects on the fuel lines, it isn't all that difficult. Order a set of the QD o-rings from BBY and replace them when you pull the tank. Lubricate them when you assemble them.

The fuel filter is the most difficult part as you need to remove the lock ring holding in the pump assembly. I use an oil filter wrench to loosen and tighten the ring. It was the largest size Autozone had. Depending on the condition of the gasket, you might be able to reuse it as I did but they get hard and it may be difficult to get it to seal properly.

+1 on the flexible fuel lines from BBY. I am using them and am very happy with them and I don't have to worry about Ethanol eating away at the in tank lines any longer. If you go that route, just go slow in sliding them over the tubes so you don't split them and pay attention to the flow direction on the filter and the orientation of the lines on the bottom and what direction they point. One of those lines may be enough to do the bike. You need a short straight piece and a curved piece. I cut the straight piece off one and use the other for the curve but in retrospect, It may be possible to just use one line for both pieces if you leave enough on the one end for the clamp. I suggest you pull the fuel gauge sending tube and look inside to make sure you don't have the lines rubbing against the side of the tank when you are done so you don't wear a hole in them from vibration.
 

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So, in order to change the fuel filter, do I need to drain the fuel tank?
If you have quick disconnects or clamps for the fuel lines, the answer is no BUT, you have to remove it and turn it onto its left side so the fuel is not covering the pump access hole. The pump assembly can be removed with a fair amount of fuel remaining in the tank but I would recommend it to be below half if you want to go that route.
 

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Discussion Starter #8
Thank you all for the replies and comments. I have enough here to do this. Just gonna drain my tank. I had it full for the winter.
 

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I'm not all that confident to pull my gas tank off my '03 LT (106K) to change the air and fuel filter. Is it very difficult and anything I need to know besides what they have in the shop manual? I found shop manuals are really that accurate.
Second, I'm running Synthetic oil because it is a high performance engine and thought It would run better. I was told by the dealer, I'm wasting my money and just use standard oil. Any opinions on this from this group?

Thanks
Go to Bmw motorrad club of northern Illinois. www.illinoisbmwriders.com Go to service in drop down click on maint and repair videos. Shows you all you need from stripping fairings and pulling the tank. To fuel air filter change . Excellent videos.
 

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I'm not all that confident to pull my gas tank off my '03 LT (106K) to change the air and fuel filter. Is it very difficult and anything I need to know besides what they have in the shop manual? I found shop manuals are really that accurate.
Second, I'm running Synthetic oil because it is a high performance engine and thought It would run better. I was told by the dealer, I'm wasting my money and just use standard oil. Any opinions on this from this group?

Thanks
Go to Bmw motorrad club of northern Illinois. www.illinoisbmwriders.com Go to service in drop down .click on maint and repair videos. Shows you all you need from stripping fairings and pulling the tank. To fuel air filter change . Excellent videos.
 
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