Thread: GL-4 75w-90 Synthetic question

Down in the south, the only thing you can get locally at your standard retail store is CRC Sta Lube 85W90 GL-4. Seems to work fine in both my Nissans.

I was using MT90 but after the replacement trans dumped fresh oil I used Mobil 1 75w-140w. Not many miles on it and then the car is down again but not due to the tranny.

Why is GL-4 so hard to find? Lucky for me the Carquest down the street from me ordered some when I needed it. I read that AMSOIL is good too. I just stick to MT-90 because it's what I used when I had my Z32.

I was using GL-5 synthetic which is supposed to supersed GL-4 and I don't know if I was imagining things but I smelled something burning the whole time it was in......Drained it the burning smell went away. I'd be careful with that shit.