T-400 fluid?

rallye bob · 04-10-2009, 04:53 PM

I am sure this has been discussed to death, but my search has not answered my ???? satisfactorily......
I am running a T-400 with a manual ( Hypster, reverse pattern) valve body (drag race only application, no trans brake).
My question is. Going with the recommendations of my "trans guy" I run the Dexron III fluid. I liked that because it was easy to get/find....... Well I went to get my supply for the upcoming race season, and found it very hard to find. Can anyone clue me in on this? Why is the Dexron III going away? Can you "trans guys" tell me what I should substitute for my "old standby"?
I guess I could ask my "trans guy" but I have all this "been there, done that" information at my disposal, so I thought I would tap into it..TIA

72Malibu · 04-10-2009, 07:01 PM

I've been using Mobil 1, synthetic can take the heat better.

csjta · 04-10-2009, 07:07 PM

Dexron 6, good stuff, but it ain't cheap

njk53 · 04-10-2009, 08:57 PM

Be careful using Dex VI. Dex VI is not compatable with the material that is used to manufacture some seals.

ss3011 · 04-10-2009, 09:09 PM

All GM Dextron fluids at back compatible. The newer fluids, were developed as an improvement on past fluids, and are more stabile, and maintain their viscosity better, cold to hot. Part of the reason for the new Dex 6 fluid is to have a 100,000 mile service life in cars running normal conditions. Heavy duty driving still needs fluid swaps as recommended in the owners manual.

Tom Goldman · 04-11-2009, 11:55 AM

Mopar ATF+4 also performs very well in race applications. .........holds up very well in high heatand has excelent anti foaming properties.....Even available at Walmart! ....I've been using it for about 5 years in both my stocker,a TH400,without a cooler, and my SG car, which runs in high gear all the way down the track. ......No wear problems,or clutch issues. .....Tom

04-10-2009, 04:53 PM	#1
rallye bob Member Join Date: Sep 2006 Location: Genoa, Illinois Posts: 488 Likes: 9 Liked 6 Times in 4 Posts	T-400 fluid? I am sure this has been discussed to death, but my search has not answered my ???? satisfactorily...... I am running a T-400 with a manual ( Hypster, reverse pattern) valve body (drag race only application, no trans brake). My question is. Going with the recommendations of my "trans guy" I run the Dexron III fluid. I liked that because it was easy to get/find....... Well I went to get my supply for the upcoming race season, and found it very hard to find. Can anyone clue me in on this? Why is the Dexron III going away? Can you "trans guys" tell me what I should substitute for my "old standby"? I guess I could ask my "trans guy" but I have all this "been there, done that" information at my disposal, so I thought I would tap into it..TIA

04-10-2009, 07:01 PM	#2
72Malibu Junior Member Join Date: Nov 2008 Location: Republic,Mo Posts: 93 Likes: 0 Liked 0 Times in 0 Posts	Re: T-400 fluid? I've been using Mobil 1, synthetic can take the heat better. __________________ * 72 Malibu * 1.329-3.99-6.28@106.71-9.98@131 best 60ft to date-1.2997

04-10-2009, 07:07 PM	#3
csjta Junior Member Join Date: Jul 2005 Location: Richmond, VA Posts: 66 Likes: 35 Liked 0 Times in 0 Posts	Re: T-400 fluid? Dexron 6, good stuff, but it ain't cheap

04-10-2009, 08:57 PM	#4
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: T-400 fluid? Be careful using Dex VI. Dex VI is not compatable with the material that is used to manufacture some seals. __________________ Nelson Kowal Stock 345

04-10-2009, 09:09 PM	#5
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 906 Likes: 69 Liked 237 Times in 112 Posts	Re: T-400 fluid? All GM Dextron fluids at back compatible. The newer fluids, were developed as an improvement on past fluids, and are more stabile, and maintain their viscosity better, cold to hot. Part of the reason for the new Dex 6 fluid is to have a 100,000 mile service life in cars running normal conditions. Heavy duty driving still needs fluid swaps as recommended in the owners manual.

04-11-2009, 11:55 AM	#6
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,468 Likes: 874 Liked 838 Times in 232 Posts	Re: T-400 fluid? Mopar ATF+4 also performs very well in race applications. .........holds up very well in high heatand has excelent anti foaming properties.....Even available at Walmart! ....I've been using it for about 5 years in both my stocker,a TH400,without a cooler, and my SG car, which runs in high gear all the way down the track. ......No wear problems,or clutch issues. .....Tom __________________ Tom Goldman 1500 SG , 1506 STK