Can someone who owns a 2015 FJR look in your owners manual and tell me what specific weight motor oil you should use? I'm taking delivery on a new FJR next weekend and want to know what the manual specifies. Thanks.
The 2014 manual calls for a special Yamaha rear drive gear oil. Check your owners manual for the 2015 model. That is a change from the 2013 to the 2014. Has to do with anti foaming during High speed running. Been a lot of discussion on this on the FJR forums. The new Yamaha snake oil cost about twice as much as the reg synth 75W90. You pay your money and take your chances.Oh, no. Not another oil thread!
Owner's manual says 10W-40 up to 110 F. Over 110F, use 20W50.
I use Shell Rotella T6 (5W-40) year around and I live in north Texas.
If you check the threads on oil for the FJR, you will see people using practically every appropriate grade oil. Basically, you have a liquid cooled, bulletproof engine that is not particular fussy about the oil you put in it.
Rear drive assembly is the same. Dino gear oil, 80W90 will work. So will synth 75W90 or 75W140. A lot of us (pretty much needlessly) change final drive oil each time we change engine oil. It doesn't take long and doesn't cost much. A quart is good for 4 FD oil changes.
If you change your own oil, one warning. If you use a torque wrench, the specs in the service manual for the engine drain bolt are wrong. Book says 31 lb.-ft. That may strip the threads out of the crankcase. Book says specs for the final drive drain bolt is 17 lb.-ft. for the same sized bolt. That is a more reasonable figure.
The lowest bidder......who makes that "special" Yamaha rear drive gear oil.