goneregret
New member
Hello all. I have a 1998 K1200RS with 50,000 miles and I'm trying to decide what gear oil to put in the transmission and final drive. A youtube video recommended Castrol MTX SAE 75W-140 but I can't find that for sale anywhere. My local BMW bike service department recommended 75W-90 but didn't have a brand name for me. BMW has the 75W-90 with their own brand name on it for $22 a liter and I'll need two bottles. Can anyone recommend a type of oil and brand name? I use the bike for commuting, canyon riding, and some long distance touring. I'd like to do this on the cheap if I can but prefer to use good products. Thanks for any help.