I'd like to know, had Torco in it before.
Wanted to change from 4.30 to 4.56 that's when I went to the blue redline shockproof lube. The 4.56 didn't work out for throttle stop racing switched back to 4.30's when I pulled the drain plug it came out like blue tar wouldn't drain took 3 hrs to clean the housing.
May not happen to anyone else. But for me I had better things to do with my time.