I believe it's 20W 40, if this helps.
800ml of oil is required. I use Motul 10w40 (because that's what I use in my YZ450) in my Son's bike.
10w 40, I use vavoline for all of my bikes
The precise type of oil that a Yamaha TTR 90 dirt bike should use can depend on the year the bike had been manufactured ad should be listed in the manual for the bike. For a 2002 Yamaha TTR 90 bike, the recommended oil type is 10W-30 (when 10 degrees Fahrenheit or above) and 20W-40 (when 40 degrees Fahrenheit or above).
That is what you should use. I recommend you use synthetic oil in this air cooled engine.
Regular!
yes if it is 4stroke witch i think ttr 90 is! use good type of gas, you have separate place for engine oil, but with 2stroke engines you have to mix gas and oil together.
80w90 hypoid oil. I use Mobile 1 synthetic in my Rhino gear boxes.
its 80w 90 gear oil. i use synthetic and have had no problems on my 94 timberwolf
what type of oil should i use when i cange the oil in my 2006 banshee Belray Gear Saver,75w #93150 10W30 motor oil, says in the Clymer shop manual for the Yamaha banshee. 1987-2004. but i use belray gear saver 80W, meant for 2 stroke transmissions.
1.45. just use the site gage right under the oil filter. there are 2 sets of marks, the lower is for cold level, and the upper is for maximum hot level.
a half of quart 2 stroke .....2 stroke oil mixes with the gas only!!! use automatic transmission fluid type f for your gear oil..DO NOT USE 2 STROKE OIL FOR GEAR OIL!!!!