petrol
You should use Suzuki's 10W 40, but it is safe to use another brand of 10w 40 as long as it is a motorcycle motor oil. You will need an oil with wet clutch protection.
I just used 10w-40
10w30 motor oil
1.5l of 10w-40
Yes, oil should be put in the crankcase on a 1989 Suzuki RM 250. The proper oil to use for this is a product made by Standard Oil called 80-90W Gear Oil.
475ml in eack fork and you should use 10 weight oil.
The required gasoline for Suzuki motorcycle is Diesel gasoline.
10W40 or on what type of tranny it has
5w -30
Suzuki 4- stroke motorcycle engine oil Sp-4A SAE 10W - 40
they use 475 cc of oil
5w-30