Hey Mike, does your oil drain bolt take the allen wrench or the socket end? My 95 has the 21mm socket end, never any issues taking it off. I wonder if you got yours off, could you change it over to socket? Have you tried an impact wrench to break it loose? At least you got a good way to drain it after all. I don't like those allen type drain bolts, cuz when you round a flat spot, you know you're in trouble. 40-44 Nm is the spec.