c4 dextron III

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Jun 24, 2015 | 09:51 PM

Bill Jennings

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Joined: Apr 2012

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From: Virginia Beach Va

c4 dextron III

On a C4 95 stock base lt1 is dex III or IV the only trans fluid recommended, shop manual doesn't say.

Jun 24, 2015 | 10:37 PM

cuengineer

Pro

Joined: Jan 2011

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From: Clemson SC

Not sure if it might have changed through the years, but the owner's manual for my 1988 Base Model says Dexron II as shown below. I personally use Dexron III though.
Dexron ® II
GM Part No...................................... ....................................... 1051855
Size ........................................ ........................................ 0.946 L (32 oz.)
Usage .......................... Automatic transmission and overdrive unit

Jun 25, 2015 | 08:48 AM

WVZR-1

Team Owner

Joined: Sep 2003

Posts: 25,360

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Quote:

Originally Posted by Bill Jennings

On a C4 95 stock base lt1 is dex III or IV the only trans fluid recommended, shop manual doesn't say.

III was introduced in '93 I believe and was used thru maybe '04 or so. There was never a IV spec but there is a VI spec and I suspect that's what you meant.

The compatibility of VI to III is often debated. I'll leave that alone. I've a DexIII vehicle and I use an Allison spec'd product that is DEXIII spec'd. Castrol Allison TranSynd

Last edited by WVZR-1; Jun 25, 2015 at 08:51 AM.

Jun 25, 2015 | 08:53 AM

enventr

Safety Car

Joined: Aug 2006

Posts: 4,147

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From: Port St. Lucie West Florida

Are they still manufacturing Dexron 3 anymore?

Jun 25, 2015 | 09:32 AM

cuengineer

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Joined: Jan 2011

Posts: 580

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From: Clemson SC

Advance Auto has CARQUEST Oil & Fluids Dexron III/Mercon (ATF) Automatic Transmission Fluid (1 Quart) for $4.99/qt. I haven't used this though as I still have a stash of Dexron III.

Jun 25, 2015 | 12:36 PM

davewhtt

Pro

Joined: Oct 2012

Posts: 648

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From: weems va

Quote:

Originally Posted by Bill Jennings

On a C4 95 stock base lt1 is dex III or IV the only trans fluid recommended, shop manual doesn't say.

Ive been using Mobile trans fluid in my 93 auto and red line for my power steering. Probably more important than the brand name is that you are changing your fluids all of them when needed.

Jun 25, 2015 | 12:53 PM

ColaBear

Burning Brakes

Joined: Jan 2012

Posts: 1,191

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From: Gilbert AZ

2018 C1 of Year Finalis4

I run this in my 96 Auto.

Jun 27, 2015 | 09:21 AM

MavsAK

Melting Slicks

Joined: Feb 2014

Posts: 2,409

Likes: 44

From: NC

I used Dexron VI mobil synthetic in my 89.
Still baby smooth shifts.

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Jun 27, 2015 | 10:48 AM

c4cruiser

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Joined: Dec 1999

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From: Lacey WA RVN 68-69

NCM Sinkhole Donor

A good quality ATF that meets the DexIII/Mercon spec will be fine for GM auto trans vehicles. Most ATF synthetic fluids will also meet the Dex VI spec too.

Last edited by c4cruiser; Jun 27, 2015 at 10:50 AM.

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