Any universal hydraulic/transmission fluid = to/compatible with JD303 or better, (says on the 5 gal. can), found in any auto parts store, Walmart, K-mart, and, I think, a few drug stores /forums/images/graemlins/wink.gif. The resorvoir is your transmission. That covers the tranny, rearend and hydraulics. You drain it from the rearend, (lowest point).