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I have a 1993 SC 400. It has the original diff. I can't get the fill plug out. Is the diff case aluminum or steel. I don't want to put a torch on it if it's aluminum.
heat should be the last resort!
have you tried using a big breaker bar and cheater pipe yet?
pb blast that little *********** to hell
hold a magnet to it. if it sticks, it is steel
if it doesn't its aluminum!
Diff ??
