Well Ive owned this 01 yz426f for over a year now I check the oil every time I ride change it every couple rides and never had a problem till now. So to get down to it, the oil capacity on these things is about 1.8 quarts I put in 2 quarts letting in run for 3 minutes. (the radiator is almost to hot to touch) and I check the oil dipstick, it doesn't register, so I dump in a 1/4 quart and still doesn't register. I am baffled so I break loose the bolt in the front of the frame just under the exhaust let it run for a minute or so and no oil seeps out... I'm wondering if the oil pump is shot but if it was shot then why isn't the dipstick registering or maybe its just something simple I'm looking over. Maybe the oil is going somewhere it shouldnt?.... I don't know what to do now. Has Any had this problem!? HELP Please!