Anyone adding transmission fluid to fuel?

[FlintRidgeFarmSN]

Been hearing from alot of people lately that its best to add a quart of transmission fluid to the fuel tank every 2-3 fill ups to clean the engine good. Is anyone doing this?

[KMarlatt]

ive ran tranny fluid in my past 2 dodges, got rid of both of them with 200k and motors ran like brand new, and fuel systems perfect. I actually rotated tranny fluid, 2 cycle outboard motor oil, the grey bottle cetane boost stuff.... i would add a little of one each fillup. but dodges need lube in fuel system. dunno if fords are the same. I have added the grey bottle stuff in the ford i own now. ill eventually try the tranny fluid. i dont know how picky these motors are. cummins can pretty much run anything thats close combustable.

[04hdfatboy]

when my friend helped me change the fuel filters we put about half a quart of tranny fluid on the top filter to prime the system. So far no problems.

[blackcloud2k]

I have ran it in past trucks but never this truck. I know it really quieted down the old trucks. This truck doesnt ping and knock like the older trucks used to.

[stoneit]

yep do it about 3x a year and all is good truck has 225,000 and still on same o rings and injectors

[Term3]

A diesel mechanic told me to do (half liter) this every other fill up. Mainly due to the high detergent content of ATF.

[underdogg]

tranny fluid in the gas tank ,, this is my first ford truck ill be scard to do that but how do it work an what will it do for the truck

[Term3]

Well according to the mechanic it helps clean things up and keep things lubricated. It's only half a liter every other tank so I can't see it causing any problems, I've done it since new. On these forums a lot of people talk about frequent injector sticking well I have an '05 with 150k on it and I have never had any kind of injector problems. Is that due to adding ATF to my fuel, using synthetic oil, or just luck. I have no clue.

[hodge1995]

I am no diesel guru but i believe the 05 fuel system is a different animal than a 6.4. I believe there was a thread on this awhile back geared toward putting tranny fluid in a 6.4 and there wasnt many that thought it was a good idea

[cmns2500]

6.4 is a common rail right? i know Cummins common rail guys rarely add anything to the tank other than power service every so often...