100% Synthetic any major brand.
There isn't an 850 venture. Only a 1200 and 1300.
I've got a better question, why is this question in the Chevy venture forum ?
So what, exactly, is the question? I have changed the oil in this bike, so what is it you want to know?
10W-40 is recommended, specially formulated synthetic for motorcycles is best.
Oil fuel ratio for z 1983 Yamaha IT should be listed on the oil bottle. The most common ratio is 50:1.
I've got a better question, why is this question in the Chevy venture forum ?
There is a oil sight low on the engine on the throttle side
fram 6017A stp SDF13
right in the very center of the bottom of the engine
yamalube 4
Its located on the front of the motor and removed from the bottom
50:1 ratio