Im fixing my rear main seal leak and I pulled the drivers side axle without draining the gear oil : I had Redline MT-90 in there which was under 1k miles, I was just going to drain it into a bottle and pour it back in since its so expensive but now its all over the street Im going to order some more Redline MT-90, but im going to get the tranny in by tomarrow. I went and bought a gallon of Coastal 80W 90 Gear Oil (GL-5, GL-4, GL-3) for 6 bucks and was planning on using this until the Redline comes in. Is this going to give me any problems?

 

Almost certainly not. Even if you're in the camp of people who don't want to put GL5 gear lube in their car, you'll be fine until the MT90 comes in. Hell, you go to nissan and ask to see what your stealership puts in and they'll (if they were like mine) bring you out a GL5 pennzoil.