R1100R - BMW Luxury Touring Community
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post #1 of 4 Old Mar 14th, 2015, 6:57 pm Thread Starter
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Join Date: Jan 2014
Posts: 17

Hi All,

I have a 96' R1100R
I have been told by my BMW dealer that I can run 75w-140 synthetic oil in the tranny and final drive, and I guess you could run anything in it if you want to put it in.
My rig has 50k and has only had 80w-90 in it. Now, I have been under the assumption that putting synthetic in a rig that the book says should have 80w-90 in it, is wrong. This will eventually ruin the seals??? Does anyone have a rider report with lots of miles running synthetic in a rig that has 80w-90 as a stock oil?

Thanks in advance.
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post #2 of 4 Old Mar 14th, 2015, 10:33 pm
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Location: West Lafayette, Indiana,
Posts: 727
Re: R1100R

I have no real report or experience with the 1100 R. However I had an 1100 GS, and have had two 1200 GS's, and I used synthetic with not issues. BUT, if you are concerned about it, why switch???
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post #3 of 4 Old Mar 14th, 2015, 10:59 pm
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Location: Mount Vernon, WA, USA
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Re: R1100R

Use the 80W90. There is no need for the heavier oil.

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post #4 of 4 Old Mar 15th, 2015, 5:38 am Thread Starter
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Re: R1100R

In ref: to jrlakin,

The dealer recomended it. and I purchased it without doing my homework. This purchase was about 5 months ago. I had developed some engine trouble that took priority over the gearbox and final drive oil change. I looked it up in my manual after completing the engine work needed, and saw that it is 80w-90. I called the dealer on this and they indicated that if there was a problem with the oil and the bike started leaking it would be that there was a problem already (which at this point I have not leaks) and the conversation would indicate that it would be my problem with no help from them on cost of repairs if the oil caused any problems. So with that conversation I dicided to ask on this forum. The answers that I got hear agrees with my thinking. If it is not broken don't fix it. I am going to return the oil and get what is recomended for my rig, which is the 80w-90. Thanks for the replies.
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