oil is oil like Yamaha recomends yamalube..its bull.sheet. they just want money..i use 5w30 or 10w30 most likely 10w30 in summer..i use valvoline synthetic in cars snowmobile and ATV, its the 3rd best oil if you want use amsoil that the best oil on planet...it allows you to do 25k mile change intervals in a truck or car
It could be your water pump seal
Kawasaki.
What is the spark plug gap on a kawasaki mojave 250
I would use 10w30 Synthetic in your air cooled engine.
on the right side of the engine above the water pump. it is held in by 2 bolts
pop off seat for kawasaski mojave 250cc1989-2005
1987
50mph
lower 60's
Stock 55 to 60
Good oil
Ummm if its a 250cc it goes about 130mph