BMW R1200R R1150R/T F800 K1200R R1100R/T R1250R RnineT Message Board

Has anyone any experience using Mobil1 Synthetic Gear Lubricant LS 75W-90 in their R1150R Transmission?
Thank you.

RadicalR1150R wrote:Has anyone any experience using Mobil1 Synthetic Gear Lubricant LS 75W-90 in their R1150R Transmission?
Thank you.

Yes. Using it in my Rockster, approx 30k miles, nothing bad to report, though I'd hoped for cold fusion.

Seriously, spec is for GL-5 oil in this viscosity range, so it's hard to screw up. Until someone does thorough gear inspection on the tooth load zones and hypoid sliding surfaces, with comparison between contending lubricants, I'd just squirt GL-5 in there and ride. The inevitable commentary about this or that oil invoking smoother shifting or quieter operation is likely wishful thinkng.

Same experience here 50k and going strong.

Yeh ,you got me there. Wishful thinking indeed.
Today just changed my transmission oil . 75/90 semi synthetic Comma GL5. What a stink though from the stuff. Weird to see uncoloured lube.
The full synthetic stuff does not seem to be widely available in the UK.