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Tractor Talk Discussion Forum

transmission fluid mixed in with diesel fuel

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anothertractor

10-13-2003 09:52:15




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I saw a guy changing the fuel filter on his 1999 Dodge with Cummings diesel and he was priming the fuel filter canister with transmission fluid. he said that he had heard that automatic transmission fluid was a good cleaning agent ad boosted the horsepower a little bit. has anyone ever heard of doing anything like this? I am far from knowing much about Diesels but I am not sure I want to do this to my 2003 Dodge. But who knows, it might be a good thing.

Thanks,
Anothertractor

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Farmered

10-14-2003 19:44:16




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 Re: transmission fluid mixed in with diesel fuel in reply to anothertractor, 10-13-2003 09:52:15  
I was running a Texaco truck stop about 30 years ago and the truckers back then would buy a quart of ATF to put in the tank before fillup so you can see that it is not a new idea. You can buy injector cleaner at the auto supply store that will do the same job for a lot more $$. Ed



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RJ-AZ

10-13-2003 19:37:49




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 Re: transmission fluid mixed in with diesel fuel in reply to anothertractor, 10-13-2003 09:52:15  
I'll probably catch he77 for this but I do this all the time on fuel filter changes. Dodge/cummins, Ford powerstrkes, GM 6.5's, JD Ind.,CAT and Case Ind. with no problems. I use the disenser pump in our shop to top off the filters with ATF prior to installing.



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Allan

10-14-2003 03:17:14




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 Re: Re: transmission fluid mixed in with diesel fu in reply to RJ-AZ, 10-13-2003 19:37:49  
Hi RJ,

If you've done this on a habitual basis, then I would have to say that your method must work.

I've just always poured a known quanity of ATF into the tank prior to filling to thourghly mix the two.

I've got to say that the first time I tried this that I was more than a bit skeptical about this even working, but I had a diesel that was missing and it was obvious that an injector was dirty.

I was in a cafe havin' coffee with the boys and was telling them of my delima and of my not wanting to spend the money to have the injectors cleaned.

A trucker at the next table was the guy who put me on to the 'fix' and explained to me that he and his crowd had been doing this for years.

So, figuring that the engine certainly couldn't run any worse than it already was, I took his advise and tried it.

I really blew my mind how quickly the injector miss cleaned up. I've used it ever since.

Allan

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Allan

10-13-2003 10:32:49




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 Re: transmission fluid mixed in with diesel fuel in reply to anothertractor, 10-13-2003 09:52:15  
Hi,

Using ATF to clean injectors is an old trucker's trick and I can tell you from personal experience that it really does work. When treating an engine with a fouled injector, you can definitely feel the difference within only about 10 to 15 miles. Cleans ‘em right up. I can't tell you why, but it has something to do with the detergent in the ATF.

However, where I would differ with your friend is his method of its application. It would seem to me that he is running the risk of slugging the pump with ATF.

I would much rather mix the ATF in the fuel tank at a rate of 1 qt ATF to 20 gal. of fuel. At least, this is how I apply it; just put a quart of ATF into the tank and then fill with fuel to properly mix the two.

Regards,

Allan

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