Transmission fluid
09-09-2014, 01:38 PM
#1
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Join Date: Sep 2014
Posts: 5
Transmission fluid
Hi, I just purchased a '94 Z28 that is going to be a dedicated track car. It's got a 383 stroker engine making 450-500 hp, and a T56 6 speed tranny. Looking for advice on transmission fluid. I've heard castrol syntorq is a good gear oil and they use that in viper T56s. Looking forward to any help you can give.
Thanks,
Tom
Thanks,
Tom
03-17-2015, 12:33 PM
#3
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Posts: 70,648
Re: Transmission fluid
What's wrong with using Dexron-III compatible, like Tremec requires. They do not recommend synthetics.
The T56 factory manual has similar comments.
Frequently Asked Questions (FAQs)
Q: What type of fluid does TREMEC recommended?
A: For all TKO 5-speed models, TREMEC recommends GM Synchromesh (GM Part # 12345349). For all other aftermarket models we recommend Dexron III ATF.
Q: Why use automatic transmission fluid in a manual gearbox?
A: Automatic transmission fluids provide the necessary protection and lubrication, while still allowing the synchronizer to function at its best.
Q: Why not use a synthetic fluid?
A: Some brands of synthetic fluid contain powerful detergents and additives that can prove harmful to your transmission's synchronizers. While many synthetic fluids perform very well, in most cases, we do not recommend their use. Furthermore, they may void your warranty. For peace of mind, remember that TREMEC conducts all of its OEM validation testing using conventional fluids without issue.
Q: Why not use gear oil in one of your transmissions?
A: A hypoid gear oil by design does not allow mechanical surfaces to make contact with one another. A synchronizer relies on friction (much like your car's brakes) to do its job. Thus, gear oil in a synchronized transmission can be a bad combination, potentially causing a variety of shift quality issues. Furthermore, many gear oils contain sulfur additives that can damage friction materials.
A: For all TKO 5-speed models, TREMEC recommends GM Synchromesh (GM Part # 12345349). For all other aftermarket models we recommend Dexron III ATF.
Q: Why use automatic transmission fluid in a manual gearbox?
A: Automatic transmission fluids provide the necessary protection and lubrication, while still allowing the synchronizer to function at its best.
Q: Why not use a synthetic fluid?
A: Some brands of synthetic fluid contain powerful detergents and additives that can prove harmful to your transmission's synchronizers. While many synthetic fluids perform very well, in most cases, we do not recommend their use. Furthermore, they may void your warranty. For peace of mind, remember that TREMEC conducts all of its OEM validation testing using conventional fluids without issue.
Q: Why not use gear oil in one of your transmissions?
A: A hypoid gear oil by design does not allow mechanical surfaces to make contact with one another. A synchronizer relies on friction (much like your car's brakes) to do its job. Thus, gear oil in a synchronized transmission can be a bad combination, potentially causing a variety of shift quality issues. Furthermore, many gear oils contain sulfur additives that can damage friction materials.
Frequently Asked Questions (FAQs)
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