R18 Car engine oil

theMucker said:
I admit that I had to look that one up and now I know that it was an insult.

Dunning-Kruger Effect

The Dunning-Kruger effect is a cognitive bias in which people wrongly overestimate their knowledge or ability in a specific area. This tends to occur because a lack of self-awareness prevents them from accurately assessing their own skills.
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I won't go on the defensive such that I should go into a list of my dissertations and accomplishments in the automotive, motorcycling, aeronautics, nuclear mechanics or physical science history. I am somewhat published on the web and known in the motorcycle and physics industries, by anyone who cares will find me on the web.
Getting back to the topic at hand, I still say that anyone who cares about cost/competence/other personal issues regarding the maintenance and/or repairs of their R18 (or any other vehicle) should do a bit of research and make their own informed decisions.
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Finally... the dreaded "oil thread" has hit his forum. God help us all!!
 
Apparently we're not the only ones that scratch our heads over BMW's gear oil specifications.

70W-80 Hypoid Axle G3

Hello All. Has anyone found an alternative for the BMW 70W-80 Hypoid Axle G3 fluid? (P/N: 83 22 2 413 512) I see that it is a GL5 fluid and Redline makes final drive fluid within this range. At $60 for 500 ml seems kind of steep.
www.bmwsporttouring.com www.bmwsporttouring.com
BMW Hypoid G3.jpg
 
theMucker said:
I'm sure that M1 Racing 4T is excellent stuff! I was only pointing out that the R18 doesn't need it. And that the R18 has a dry clutch, so the potential issue regarding use of oils with friction modifiers that can cause problems with wet clutches, is NOT an issue with our machines.
For all practical purposes, the R18 is much like most cars made today. The engine, clutch, transmission and final drive are ALL separate systems. The engine, transmission and final drive still have specific requirements for lubrication type and viscosity. The DRY CLUTCH should NEVER see any form of lubrication whatsoever.
I have no ax to grind here. I only suggest that owners pay attention to the specifications in the owner's manual, while knowing that the oil does not have to meet wet clutch requirements.
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Clearly the R18 is NOT a wet clutch design so, as you stated, there is no need for motorcycle specific oil!
 
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