I am not worried about differential temperatures just worried more about something go wrong because I put the
synthetic into Diff. Not sure they’re like the transmission on a Toploader in a T10 Where you don’t wanna use synthetics this is an older differential circa 70s so I figured I’d ask if there’s any experience out there but giving Lucas a call might be the best.
Again I bought it because they didn’t have regular petroleum base at the auto parts store when I was there and I wanted to just get it done...��