I have a 2005 Baja 90 (Wilderness I think) its the green one with the automatic transmission. Having a senior moment here, does this thing use any type of fluid for the tranny. Can't find it in the manual. Seems to have a little slippage at higher speeds. Bought it last year used for the grand kids. Always ran fine, thanks,

 

if the automatic tranny is separate from the crankcase, i'd say yeah, it would probably use 85-90 wt lube oil. i'm not real familiar with that model quad, but i suspect the tranny is separate and it is belt driven. is that true?

 

if not, it may share the crankcase oil....

here's a list of the different manuals that baja has to offer.

Baja Motor Sports | Owner's Manuals

 

it takes 10w30 4 stroke oil trust me you'll thank me later I know my stuff