what trans fluid do you guys run in your built trans? what do the big name trans builders want you to run? thanks

 

I run dextron III

 

nothing but the best 4 my truck = Mobil 1 100% synthetic ATF

 

I run what my 30 year trans builder told me to run.......Good ole Mopar ATF +4 and change it out regularly....say every 20K miles or so. Also, it is synthetic.

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[QUOTE=TexasCTD;2698422]I run what my 30 year trans builder told me to run.......Good ole Mopar ATF +4 and change it out regularly....say every 20K miles or so. Also, it is synthetic.

Same here my trans builder suggested Mopar ATF+4, and change it about every 30K.

 

[QUOTE=jmmcdona;2698502]Interesting... The trans builders I talked to told me that with the red alto clutches not to use the atf+4 due to it having a lot of friction modifiers something not wanted with racing trans.

 

Although I occasionally run my truck down the track, It is not a dedicated race truck. I daily drive it, tow with it etc. The trans is smooth as silk but it hooks up and gos.

If the trans was born made to run Mopar ATF +4 and it works great, why change?

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why do you guys run dexron III? i am thinking im gonna run atf 4 mines gettting built right now do to blowing out yesterday

 

the oem clutch require atf+4 my red eagle clutches can use either. My fluid costs $10 a gallon. I DD my truck also Mine also shifts very smooth but when I hammer down on it the shifts are quite firm

 

I use amsoil ATF in mine

 

I guess either fluid will work then. I have upgraded clutches also. I have just used ATF +4.

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