I got a raw deal yesterday. Bought a used 2003 Sportsman 400 that looked to be in great shape. Starts right up, looks good, everything works. It had the transmission whine I'd heard about but the seller said it's always done it and i've read that it's "normal" and that it could be driven for years with that sound. Well, I went to check the transmission oil just for grins, and couldn't find the dipstick. Finally found where it was supposed to be according to a Clymer manual seller had. Low and behold, after scratching around with a screwdriver found a hole where it was supposed to be. So now the obvious question is, can I add oil, run it a little with no load, (tires off the ground) and drain it (do this procedure a couple times) to flush it out or do I have to remove the tranny, open it up and give it a good bath? I'm afraid I know the answer....