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
right in the very center of the bottom of the engine
fram 6017A stp SDF13
Its located on the front of the motor and removed from the bottom
yamalube 4
50:1 ratio