Quote:
Originally Posted by GJR726WY
I picked up my '13 MT BRZ this fall and switched to all AMSOil fluids within the first two months. Transmission shifts 100% smoother and there was a clunk when you would put the car in reverse that went away. I don't notice any difference in the rear end handling either. I've always swore by AMSOil though, I've run it in my racing engines for years.
OP - Did you use the GL-4 or the GL-5 in the rear diff?
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Sorry, forgot to check back in on this. GL-4 in the transmission, GL-5 in the diff.