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For a newbie the transmission oil change is pretty confusing. First, there is a whole lot of oil in there, and a regular drain tray can't begin to contain it. Be ready to put the plug back in. There are a couple of big plugs on the transmission/rear end for draining, two, I think, on the 35, three on some other models. But there are three compartments for oil, and it takes a long time for these levels to sort themselves out through little ports on the bottom of the transmission. This makes for confusing draining and filling procedures. Leaving it to drip overnight seems to be the norm. The tranny takes GL5 hydraulic oil, btw. You will need about 8 U.S. gallons, but check locally for the exact amount. I ended up putting ten imperial gallons into the tranny, which produced a lot of leaks from seals until I got it down to the right level. Don't ask your physician how much oil the tranny takes, just because he owns a 35. It will take some tinkering to get the tranny fluid level set properly, so plan on topping it up over a couple of days. The filler hole, btw, is a large plug just to the left of the gear shift. I found a sump pump hose fits it well, and the other end will thread into the drain on a 5 gallon oil can, making for quick, clean fillups. But you need to know when to quit. Good luck.
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