[2004YZFR1]

Originally Posted by SloCal

Any update here from the guys running tremec mtf fluid?

Just ordered some because im having 2-3 lockout issues on track with D4 ATF with the tr6060 but worried about how much higher the viscosity is and by the fact that GM still recommends atf.

Looking for any input on those of you that run the tremec fluid and do no lift shifting from 2nd to 3rd or any high rpm shifting around there and more broadly. Also bought some mobil 1 atf in case this experiment doesn't work out.

I had the same issue yesterday on the track for the 2-3 shifts. It’s happened to me on 2 different occasions now. It was in the high 90’s all weekend and it was really hot the last event that the trans did that. My transmission temp never got over 200.

I called TREMEC today to see when they would have their fluid in stock. They don’t have any and the place that use to make it for them doesn’t anymore. They have a new company trying to make it.

[JonDaddy82]

I've been running Royal Purple since day one with plenty of track use, no complaints.

[travislambert]

Personally, I'm not a fan of Royal Purple. It seems okay under normal conditions, but I found on the race track I would have to wait longer than other fluids on the downshifts. When you're chasing tenths on a road course, that doesn't work. Transmission temps were also higher vs OEM fluid and Tremec fluid. I ran one weekend with Royal Purple and immediately drained it.

Tremec recommends Pennzoil Synchromesh (since their fluid is no longer available). I've been running the Pennzoil Synchromesh for several track events now. It's maybe not quite as good as the Tremec formula, but it's pretty darn close.

If you currently run Royal Purple, I'd encourage you to try some alternatives. I bet you don't go back.

[AZ_1LE]

No issues in 7k miles with Amsoil Signature ATF fluid here in Phoenix. Transmission shifts like butter on and off track.

[JonDaddy82]

Originally Posted by travislambert

Personally, I'm not a fan of Royal Purple. It seems okay under normal conditions, but I found on the race track I would have to wait longer than other fluids on the downshifts. When you're chasing tenths on a road course, that doesn't work. Transmission temps were also higher vs OEM fluid and Tremec fluid. I ran one weekend with Royal Purple and immediately drained it.

Tremec recommends Pennzoil Synchromesh (since their fluid is no longer available). I've been running the Pennzoil Synchromesh for several track events now. It's maybe not quite as good as the Tremec formula, but it's pretty darn close.

If you currently run Royal Purple, I'd encourage you to try some alternatives. I bet you don't go back.

Well I’ll be damned. What pace/run group are you at most track days?

[travislambert]

Originally Posted by JonDaddy82

Well I’ll be damned. What pace/run group are you at most track days?

I run in the fastest run group. I don't like to blow my own horn, but I'm usually one of, if not the fastest, on the track at most events. I run a full weight car, so obviously, an occassional race car and/or pro driver will be faster. It's rare to have another street car running similar times though.

I have a few of my laps posted on the Best Track Times thread. PittRace is my closest track, so that's a good reference. The VIR and Summit Point laps I have posted aren't bad either I suppose.

[MatthewAMEL]

I called and asked TREMEC a few years back about the -6060 and what they recommend. Specifically about the ATF spec from GM vs their HP Fluid.


He wouldn't speak to why GM spec'd ATF for the -6060, but he did tell me all the reasons they recommend HP-MTF. So for the last few years, I have been running nothing but the TREMEC fluid...then the plant burned and you couldn't get it any more.


When I called to ask for recommendations on replacement fluid, they said Pennzoil Synchromesh.


One of the benefits, BTW is because it's not ATF, it doesn't have the expansion properties that require you to fill and then drain some of the fluid out. He said a very common failure is filling the unit up with ATF, not draining the required amount and developing leaks in seals due to case pressure.

[DaveC113]

Originally Posted by MatthewAMEL

I called and asked TREMEC a few years back about the -6060 and what they recommend. Specifically about the ATF spec from GM vs their HP Fluid.


He wouldn't speak to why GM spec'd ATF for the -6060, but he did tell me all the reasons they recommend HP-MTF. So for the last few years, I have been running nothing but the TREMEC fluid...then the plant burned and you couldn't get it any more.


When I called to ask for recommendations on replacement fluid, they said Pennzoil Synchromesh.


One of the benefits, BTW is because it's not ATF, it doesn't have the expansion properties that require you to fill and then drain some of the fluid out. He said a very common failure is filling the unit up with ATF, not draining the required amount and developing leaks in seals due to case pressure.

Thanks, I did not drain any when I replaced my fluid with Amsoil ATF last year, this isn't mentioned in the manual afaik. I hope my seals are ok! I've been considering replacing tranny fluid again, will go with the Pennzoil. The Amsoil ATF is working fine though, no complaints.

[MatthewAMEL]

Originally Posted by DaveC113

Thanks, I did not drain any when I replaced my fluid with Amsoil ATF last year, this isn't mentioned in the manual afaik. I hope my seals are ok! I've been considering replacing tranny fluid again, will go with the Pennzoil. The Amsoil ATF is working fine though, no complaints.

Procedure is to fill and then remove 1/8” or 8 ounces. The removal allows room for fluid expansion. It’s in the service manual.

Here is a step by step:
https://www.camaro6.com/forums/showthread.php?t=537762