Transmission Cooling line flush? Recommendations Please.

[c good]

Posting for a friend. He is installing a new (rebuilt) transmission. He had the sunshell go out as is typical. He wants to flush the lines that go in and out of the radiator. What type of fluid would you recommend for doing this? Mineral spirits? Trans fluid? etc. He will follow it up with compressed air. Thanks for any input. c good

 

[MacMan]

Mineral spirits would work, but be sure to completely blow out everything w/ the compressed air.

If it were me, I'd use some inexpensive trans. fluid just to flush it.....that way if any gets left behind, no issues.

 

[RedEnvoyDenali]

Mineral spirits would work, but be sure to completely blow out everything w/ the compressed air.

If it were me, I'd use some inexpensive trans. fluid just to flush it.....that way if any gets left behind, no issues.

Make that 2 recommends for tranny fluid.

 

[jimmyjam]

they sell something called transflush in an aerosol container that will forces a solvent through the lines/cooler, breaks up the gook so you can blow it out better with air afterwards. its what trans shops require you to run through your lines for warranty purposes. had to go to a couple of autoparts stores to find it

 

[RedEnvoyDenali]

they sell something called transflush in an aerosol container that will forces a solvent through the lines/cooler, breaks up the gook so you can blow it out better with air afterwards. its what trans shops require you to run through your lines for warranty purposes. had to go to a couple of autoparts stores to find it

I DID NOT KNOW THAT, thanks for the info. Now another question which way would you flush--normal direction or reverse?

 

[jimmyjam]

the directions on the bottle say to use half of the bottle one way, then the other half the other way

 

[RedEnvoyDenali]

the directions on the bottle say to use half of the bottle one way, then the other half the other way

I think I would try reverse first so that you would drive any particles back from the cooler in radiator and out of the line, then the other direction.

 

[WarGawd]

they sell something called transflush in an aerosol container

For future reference, I think this is what you were refering to:

Life Automotive Products - Smart Blend Synthetics, Trans Flush, ATF Products