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Q: What is your favorite ATF?
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DRR Trophy
Picture of Bad Nusz
posted
Guys, what is your favorite automatic transmission fluid? What do you like about it?

Me- I've just been using cheap, store-brand synthetic ATF in my TH350.
With foot-braking and a lower stall converter, my transmission temperatures usually don't get to 180 degrees, not unless maybe I'm double-entered.

I do plan to change things to get my trans temps warmer in an attempt to improve consistency.
Thank you much.
 
Posts: 365 | Location: Sioux Falls, SD | Registered: March 17, 2018Reply With QuoteReport This Post
DRR Trophy
Picture of CAD
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My transmission builder recommends using red fluid.... literally.

I have not had one single, internal component failure.

Clark
 
Posts: 130 | Location: Omaha NE | Registered: October 31, 2009Reply With QuoteReport This Post
DRR Pro
Picture of CURTIS REED
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I have been using the Redline lightweight fluid because I believe that it changes less from cold to hot. I can say that I have seen no discernible change in et just from trans temps varying 140° to 190°. You won't get the life out of it that you do a more viscous fluid though.

I tend to be hard on my trans running two classes and sometimes running high gear only. Builds a lot of heat doing that. LOL



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Posts: 2981 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post
DRR Trophy
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https://www.allisontransmissio...ds/on-highway-fluids

Castrol's variant is the most one we see used, but a 668 spec fluid is the best you can buy.


President
BTE / Memphis Performance
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Posts: 30 | Location: Mount Pleasant, MS | Registered: April 08, 2009Reply With QuoteReport This Post
DRR S/Pro
Picture of Lenny5160
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quote:
Originally posted by Brandon@BTE:
https://www.allisontransmissio...ds/on-highway-fluids

Castrol's variant is the most one we see used, but a 668 spec fluid is the best you can buy.


I switched to this a couple years ago based on prior conversations here on DRR. For many years prior, I used NAPA's house brand Type F fluid.

I can't say I noticed any difference between the two, but I'll trust that the TranSynd 668 holds up better when the conditions get extreme.


Tony Leonard
 
Posts: 3172 | Location: Inver Grove Heights, MN | Registered: March 18, 2004Reply With QuoteReport This Post
DRR Sportsman
Picture of 329L
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The beautiful thing about the Transynd is, the fluid will cool back down naturally when not being worked. Ive noticed for the last several years of using it, that the trans temps come down MUCH better coming back from a run than MOST other fluids do.

Nuz,
You dont have to run the fluid temp up to get a consistent transmission. If you switch to the Transynd, you will find your 1st pass will be much closer to the next runs. I have found the converter stall doesnt move anywhere near as much with temps with transynd, compared to other fluids.


Jeremiah Hall
 
Posts: 712 | Location: Evansville, IN | Registered: February 24, 2010Reply With QuoteReport This Post
DRR Sportsman
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quote:
Originally posted by 329L:
The beautiful thing about the Transynd is, the fluid will cool back down naturally when not being worked. Ive noticed for the last several years of using it, that the trans temps come down MUCH better coming back from a run than MOST other fluids do.

Nuz,
You dont have to run the fluid temp up to get a consistent transmission. If you switch to the Transynd, you will find your 1st pass will be much closer to the next runs. I have found the converter stall doesnt move anywhere near as much with temps with transynd, compared to other fluids.


I second that......one of the best things I ever changed....


BG
 
Posts: 760 | Location: Florence, SC | Registered: August 25, 2019Reply With QuoteReport This Post



DRR Sportsman
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Valvoline maxlife atf here


Denis LeBlanc

 
Posts: 475 | Location: Manchester, NH | Registered: February 03, 2006Reply With QuoteReport This Post
DRR S/Pro
Picture of Big Steve
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Castrol Transynd and never look back.
 
Posts: 2447 | Location: Moving back to the door side | Registered: April 30, 2010Reply With QuoteReport This Post
DRR Pro
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Unlike Dex 6 which I used prior, TES 295 and now newer 668 produces the same converter flash rpm at 125* or 180* in the TH400 I use with a 1+2 TB. My initial day warm up is starting the engine and leaving it idle until I have 130 – 140 * engine oil temp which is 8 - 10 minutes average. The rear wheels don’t turn and I don’t put it on the converter. I drive I to staging and after the first burnout trans temp is 125*. Presently there’s over 500 runs on the installed TES-295 fluid and I plan to go to 1000+ runs or trans rebuild prior to changing.

This LINK that Branden posted is for TES 668 and lists all the companies that manufacture this Exact formula under License from Allison. The App Num: 668-10xxxxx number is their license from Allison. I have Mobil Delvac 1 ATF 668 which is the exact same formula as the Castrol TranSynd 668 that is most referred to. I purchased it locally at Farm + Fleet. I wouldn’t hesitate to use any of the other suppliers listed in that TES-668 link. It's all the exact same.

 
Posts: 2497 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post
DRR Pro
Picture of rusty
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valoline dexmerc i have no reason to not use it


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1421 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post
DRR Pro
Picture of Alaskaracer
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Transynd. I run the Amsoil version. Meets the 668 and 295 specs. Everything else is second class!


Mark Goulette
Owner/Driver of the Livin' The Dream Racing dragster
www.livinthedreamracing.com
"Speed kills but it's better than going slow!"
Authorized Amsoil Retailer
 
Posts: 1503 | Location: Back home in Alaska! | Registered: February 13, 2011Reply With QuoteReport This Post
DRR S/Pro
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Amsoil


J.R. Baxter

""Fathom the hypocrisy of a Government that requires every citizen to prove they are insured ..but not everyone must prove they are a citizen."

2024 Miller
Rolla Competition Engines
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Abruzzi
 
Posts: 1529 | Location: Waxahachie | Registered: July 04, 2005Reply With QuoteReport This Post
DRR Sportsman
Picture of BD104X
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Amsoil. Just sent my trans back to Select Performance after 425 trouble-free runs (7.20 dragster) just out of guilt... they said it looked great inside for so many runs.


Billy Duhs - BD104X@gmail.com
 
Posts: 635 | Location: New Jersey | Registered: February 26, 2000Reply With QuoteReport This Post



DRR Sportsman
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Transynd here


"I am not ashamed to confess I am ignorant of what I do not know."
Marcus Tullius Cicero
 
Posts: 994 | Location: Las Vegas, NV | Registered: April 14, 2004Reply With QuoteReport This Post
DRR Pro
Picture of Eman
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Dex-merc usually Valvoline
 
Posts: 1479 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
DRR Top Comp
Picture of wideopen231
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not sure how great it is, but with dozens of praises on this site I just bought transynd for FED.




America home of free. Brought to you by 2nd amendment.
 
Posts: 4236 | Location: Greensboro NC | Registered: May 24, 2011Reply With QuoteReport This Post
DRR Sportsman
Picture of Hotrod Corvette
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Only 17 post about the best ATF...Boy Oh Boy have times changed around here...


Burt

I'm So Proud To Be An American And Not A Democrat...

 
Posts: 1225 | Location: Clinton Township, MI | Registered: September 16, 2002Reply With QuoteReport This Post
DRR Trophy
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18 but only use orielys typeF in mine works fine consistant and cheap


The difference between ignorance and stupidity. Ignorance is lack of knowledge. Stupidity is the inability to learn. Don't be stupid
 
Posts: 419 | Location: des moines iowa | Registered: January 10, 2020Reply With QuoteReport This Post
DRR S/Pro
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I've used Lucas Semi-Synthetic AFT for several years and have no reason, or plans to change. Minimal wear, great consistency and doesn't cost an arm and a leg to buy.

Bob
 
Posts: 3098 | Location: Lakeside, Ca | Registered: February 15, 2003Reply With QuoteReport This Post
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