Manual Recommended lubricants for Engine/Transmission are: Type: API grade SE or SF multigrade oil, Viscosity: 40-degrees F(5-degrees C) or above:20W40 or 10-degrees F(-10-degrees C) or below:10W30
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
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.
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!
i have a 2002 Yamaha blaster and i use castrol 10w-30
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.
When changing the oil in a Yamaha Virago 250, it depends on the engine size as to how much oil to put in. If it is a 1.4L only 0.36 gallons of oil are needed. However, if it is a 2L then 0.52 gallons are necessary. Do not overflow the reservoir.
1.3 liters. Do not overfill and use synthetic oil on this air cooled engine.
its 80w 90 gear oil. i use synthetic and have had no problems on my 94 timberwolf