ATF transmission fluid as fuel additive??? - Diesel Forum - TheDieselStop.com
1999-2007 General Questions General questions related to 1999-2007 Super Duty trucks. If it doesn't fit the other categories, post it here. Gas engine discussion that pertains to all models is allowed. Specific gas engine questions should use the Gas Engines forum.

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post #1 of 20 (permalink) Old 10-29-2009, 10:36 PM Thread Starter
 
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ATF transmission fluid as fuel additive???

I was recently told, by someone that I know knows diesels but also lies about stupid stuff to make himself seem better for some reason, that by adding a quart of atf transmission fluid to the fuel tank every other fill up will help keep fuel lines, injectors, etc., good and protected while boosting performance a bit. I am not doing it until I hear from a few others that they have done it or heard of it. So please let me know if this is as ridiculous as it sounds or actually true. Thanks so much. By the way I have a 2005 F-350 with the 6.0L.

Last edited by [email protected]; 10-29-2009 at 10:44 PM. Reason: forgot info
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post #2 of 20 (permalink) Old 10-29-2009, 11:19 PM
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If you are using ULSD and/or winter fuel you should add lubricant to every fill-up. ATF is ok but 2 stroke oil mixes easier. Better yet are diesel additives with lube & cetane booster such as Stanadyne Performance Formula.
If adding oil the mixture ratio is 1% In USA that's about 1qt to 25 gal.
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post #3 of 20 (permalink) Old 10-30-2009, 12:33 AM
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I was recently told, by someone that I know knows diesels but also lies about stupid stuff to make himself seem better for some reason, that by adding a quart of atf transmission fluid to the fuel tank every other fill up will help keep fuel lines, injectors, etc., good and protected while boosting performance a bit. I am not doing it until I hear from a few others that they have done it or heard of it. So please let me know if this is as ridiculous as it sounds or actually true. Thanks so much. By the way I have a 2005 F-350 with the 6.0L.

NOOOOOOOOOOOOOOOOOOOO!!!!!

That is very bad. Trans fluids are not what they used to be. Nor are the fuel systems of today.

Look here: http://www.thedieselstop.com/forums/...-study-231198/

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post #4 of 20 (permalink) Old 10-30-2009, 02:07 AM Thread Starter
 
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well after reading your thread it would make sense to add some form of lubricity and why not tranny fluid, specificaly. I know you wrote it isnt what it used to be but what COULD it do?? thanks for the help by the way.
post #5 of 20 (permalink) Old 10-30-2009, 07:21 AM
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well after reading your thread it would make sense to add some form of lubricity and why not tranny fluid, specificaly. I know you wrote it isnt what it used to be but what COULD it do?? thanks for the help by the way.
Two things: today's diesels aren't what they were years ago when adding ATF was the smart thing to do. Secondly, today's ATF isn't what it was years ago either. ATF is not meant to be burnt in today's diesel engines.

Any additive you add to diesel fuel needs to not have ash in it. 2 cycle oil is one as are the various cetane and lubricity additives on the market specifically for diesels.

With all the options out there that are effective and benign to today's diesel engines, ATF should be low on the list of additives, if on the list at all.

My .02.

Al

P.S. I add a couple ounces of 2 cycle oil to fuel when refueling, FWIW.

'06 F-350 SRW 6.0 PSD
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post #6 of 20 (permalink) Old 10-30-2009, 10:08 AM
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I run the ashless 2 stroke oil as well. 1oz per gallon. Works great.

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post #7 of 20 (permalink) Old 10-30-2009, 12:37 PM Thread Starter
 
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OK perfect people thankyou so much
post #8 of 20 (permalink) Old 10-30-2009, 01:55 PM
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I use Stanadyne. It makes a major difference in the volume of the engine, the response, as well as how smoothly it runs.

1 oz does 5? gallons?

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post #9 of 20 (permalink) Old 10-30-2009, 02:00 PM
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My friend has a 2005 GMC 2500HD with the 6.6 duramax. He is having injector issues and two different places told him to run the Stanadyne fuel treatment to see if it clears up. I will let you know if it works, if not then we have to change them (YUCK). Must be good stuff.

FWIW I have used P/S Diesel Kleen ( silver bottle) in every tank since I got this truck.

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post #10 of 20 (permalink) Old 10-30-2009, 06:25 PM
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I use the Amsoil diesel fuel additive and Cetane Booster all the time and my engine runs so much better!! You can hear the difference after just a few miles after I add it to the tank.

2006 F350 Lariat SDSC 4X4 DRW
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post #11 of 20 (permalink) Old 11-05-2009, 11:56 AM
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What about Lucas Oil, has anyone used it? I was also told to use Seafoam. I have used both of these, but really can't tell any difference. Mileage is the same, and seems to run like it alwasys did.

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post #12 of 20 (permalink) Old 11-05-2009, 08:21 PM
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I use Power service with cetane boost almost every tank year round.

Evan-
2003 Ford F-350 Crew Cab L/B/Dually XLT FX4 7.3L/Auto- Gooseneck Hitch Fifth Wheel Rails, Firestone Air Bags/ Toolbox
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post #13 of 20 (permalink) Old 05-25-2018, 04:42 PM
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Thanks for the information, I really appreciate it.
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post #14 of 20 (permalink) Old 05-25-2018, 08:08 PM
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Don't run it in a truck with a dpf....

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post #15 of 20 (permalink) Old 05-25-2018, 09:42 PM
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A couple of my buddies (Ford techs) have run transmission fluid in their old 7.3's for years with no problem. One of them was a transmission tech for 24+ years and he would filter the used fluid that he got out of the exchange machine. He mixed it about 30% IIRC. They have moved up to the 6.7's now so, no more. At least until they do a delete.

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