General Maintenance - ZR-1 Net Registry Forums

zr1343 · 07-31-2008

I changed the trans fluid with 10 tws 60 Castrol.
Replaced a leaking slave cylinder and bled in new clutch fluid.
While I am under there I will be replacing the rear diff fluid. I was thinking of trying redline but I think I read that you should not use the GM posi fluid with Redline. Use Redline friction modifier instaed. Anyone heard this ?
Whats the best rear diff fluid to use for a ZR1 driven on track days?

karterdon · 07-31-2008

Mobil-1 for the rear end. As for the Trans - I would have suggested - Amzoil - It meets the GM requirement - It is fully synthetic and you shift will be very smooth.

07-31-2008	#1
zr1343 Join Date: Jun 2008 Location: South Boston ,Va Posts: 10	General Maintenance I changed the trans fluid with 10 tws 60 Castrol. Replaced a leaking slave cylinder and bled in new clutch fluid. While I am under there I will be replacing the rear diff fluid. I was thinking of trying redline but I think I read that you should not use the GM posi fluid with Redline. Use Redline friction modifier instaed. Anyone heard this ? Whats the best rear diff fluid to use for a ZR1 driven on track days?

07-31-2008	#2
karterdon Join Date: Jan 2008 Location: Antioch, Illinois Posts: 129	Re: General Maintenance Mobil-1 for the rear end. As for the Trans - I would have suggested - Amzoil - It meets the GM requirement - It is fully synthetic and you shift will be very smooth.