Royal Purple with ZT rear?
08-31-2011, 10:00 PM
#2
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Car: 1990 IROC-Z 1LE
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: G92 3.23
Re: Royal Purple with ZT rear?
buy the LSD additive from the dealership, trust me on this.
if your rear has any problems that are being masked by the stock thick fluid then they will be amplified by the better fluid. I ended up having to replace my ring and pinion.
other than that, I love having all my fluids from to. Zero regrets.
if your rear has any problems that are being masked by the stock thick fluid then they will be amplified by the better fluid. I ended up having to replace my ring and pinion.
other than that, I love having all my fluids from to. Zero regrets.
09-01-2011, 12:26 PM
#3
Re: Royal Purple with ZT rear?
The standard OEM 99-02 Torsen didn't have any friction surfaces that would benefit from the limited slip additive.
There was an aftermarket T-2R with bias friction setup (cones IIRC + the torsen assy.) That would need additive.
The '98 year had a Torsen as optional; I don't know if it was the T-2 or the T-2R.
75-140 isn't going to benefit you on 99% of street cars; 75-90 is fine.
There was an aftermarket T-2R with bias friction setup (cones IIRC + the torsen assy.) That would need additive.
The '98 year had a Torsen as optional; I don't know if it was the T-2 or the T-2R.
75-140 isn't going to benefit you on 99% of street cars; 75-90 is fine.
09-02-2011, 08:58 AM
#5
Re: Royal Purple with ZT rear?
I didnt know that it doesnt need any additives, good to know. The main reason im going with Royal Purple is ive got a bit of gear whine from the guy who installed it incorrectly. when i was able to get it back to him, the gear pattern was already set. so i was hoping this would quiet it down maybe just a lil bit till i get new gears put in. and its time for a fluid change anyway.
09-02-2011, 04:27 PM
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Car: 1987 Camaro SC, 1999 Z28
Engine: GMPP 350HO, LS1
Transmission: Built 700r4/EDGE 3200, T56
Axle/Gears: 3.42 Eaton 7.625, 3.42 Zexel Torsen
Re: Royal Purple with ZT rear?
Running RP gear oil in my Z28 with no problems.
09-02-2011, 05:36 PM
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Engine: 86 Trans AM
Transmission: 5M
Axle/Gears: ?? 2:77 I think??
Re: Royal Purple with ZT rear?
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