Dexron VI for my WC T5??
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Senior Member
Joined: Sep 2014
Posts: 749
Likes: 39
From: Los Angeles
Car: 92 Z28 Clone
Engine: Vortec 350
Transmission: T-56
Axle/Gears: 3.23 Torsen
Dexron VI for my WC T5??
88 WC T5. Planning on doing my t5 oil change and was going to use this DEXRON VI. But I have been reading and some people are saying that it's too thin? What is the best fluid to use?
Joined: Jul 2000
Posts: 6,520
Likes: 91
From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: Dexron VI for my WC T5??
Dexron-Mercon is Dex III. Use that. Still widely available.
Dex-VI has zero changes that would benefit a T5. Friction characteristics of III are better for synchronizers in your application.
When someone solves all drivetrain concerns in their mind with heavier lube, disregard everything else they say.
Dex-VI has zero changes that would benefit a T5. Friction characteristics of III are better for synchronizers in your application.
When someone solves all drivetrain concerns in their mind with heavier lube, disregard everything else they say.
Thread Starter
Senior Member
Joined: Sep 2014
Posts: 749
Likes: 39
From: Los Angeles
Car: 92 Z28 Clone
Engine: Vortec 350
Transmission: T-56
Axle/Gears: 3.23 Torsen
Re: Dexron VI for my WC T5??
Dexron-Mercon is Dex III. Use that. Still widely available.
Dex-VI has zero changes that would benefit a T5. Friction characteristics of III are better for synchronizers in your application.
When someone solves all drivetrain concerns in their mind with heavier lube, disregard everything else they say.
Dex-VI has zero changes that would benefit a T5. Friction characteristics of III are better for synchronizers in your application.
When someone solves all drivetrain concerns in their mind with heavier lube, disregard everything else they say.
What brand would you go with personally? I'm new to the t5 so I would like to hear others preference .
Junior Member
Joined: Mar 2017
Posts: 91
Likes: 20
From: Phoenix, AZ
Car: 1991 Z28 5spd
Re: Dexron VI for my WC T5??
Paul Cangalosi recommends synthetic fluids in his videos. He “wrote the book” on T5 rebuilds, literally. He recommended Royal Purple SyncroMax. He says he uses themin all his road race boxes. But also mentions Castrol and Penzoil.
He has several good videos on T5 rebuilds You’ll just have to get over “Eric the Car Guy” always butting in with a comment. They are very thorough videos.
He has several good videos on T5 rebuilds You’ll just have to get over “Eric the Car Guy” always butting in with a comment. They are very thorough videos.
Joined: Jul 2000
Posts: 6,520
Likes: 91
From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: Dexron VI for my WC T5??
ATF is not going to break down, (warranting a switch to synthetic) in your T5,
Fluid availability is way more important (pumps are warranted in high-HP T56 applications, for example,) than fixing what isn't broken or failure prone. If you're pulling hard enough to move fluid back away from headset gears, synthetic doesn't' fix that. Pumps do, if set up right.
Supreme Member
Joined: Oct 2004
Posts: 4,526
Likes: 238
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Dexron VI for my WC T5??
I have been using this seems to shift smoothly better than with ATF
http://www.royalpurpleconsumer.com/p...mission-fluid/
http://www.royalpurpleconsumer.com/p...mission-fluid/
Thread Starter
Senior Member
Joined: Sep 2014
Posts: 749
Likes: 39
From: Los Angeles
Car: 92 Z28 Clone
Engine: Vortec 350
Transmission: T-56
Axle/Gears: 3.23 Torsen
Re: Dexron VI for my WC T5??
Cool . I think I'm gonna go with dexron III for now. RP is a bit pricey. Maybe my next oil change I will try RP. Should I jack the car up from the front or back for maximun fluid drainage ??
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Supreme Member
Joined: Oct 2004
Posts: 4,526
Likes: 238
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Dexron VI for my WC T5??
Jack it up on the front driver's side have the car tilt towards the passenger side the plug is not at the lower most point on the transmission
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