Fluid question

[Sinac]

I looked and could not find a straight answer. What fluid goes in the 4R100? Reason why I ask is because I'm thinking of doing a John Wood's V/B and in my shop we carry no less than 15 gallons of ATF at any given time. I work a lot with hydraulics so it is literally coming out of my ears. Anywho, I was wondering if ATF would be ok going into my transmission.

Thank you!

[bigcountrysg]

Standard is Dexron 3.

[Fullspeedjunky]

what is the brand most people run.
i.e. most people run Rotella in the motor. How about the tranny? I am doing the VB soon myself and want the same answer.

Eric

[strokin_early_99]

Swepco or Amsoil in the trans if it were me. Any other ATF will work fine, even walmart fuids.

[alabamafrog]

My new 4r100 tranny came from Ford with Mercon V in it, they highly recomended that I put that back in it when I change evey 30k.

[SCUFFY828]

mercon 3 or 5 will work, alot are changing over to 5 , i will leave which brand up to you , there are alot that will work, that comes down to personal preference

[Sinac]

What I have is a Kendall ATF Type F. The only reason why I would use it, if it is ok, is because it costs me literally nothing and I always have it in my shop.

[SCUFFY828]

Originally Posted by Sinac

What I have is a Kendall ATF Type F. The only reason why I would use it, if it is ok, is because it costs me literally nothing and I always have it in my shop.

i wouldnt use type f , thats old school stuff there

[alabamafrog]

I was specifically told by the Ford folks to not use Type F.
I think the main thing is to change it regular, like every 30K, to keep it clean and fresh.
Seems like when I did it with Amsoil it cost near $100 for the fluid and with regular oil it was closer to $50. Either way that’s a drop in the bucket to the cost of a new tranny.

[strokin_early_99]

I flushed my fluid after 25K of beating the piss out my trans and Blackstone said the fluid still had another 20-21K on it. And John Wood just laughed at me as he charged me the $224 for the Swepco racing fluid I run. He said I had thrown away perfectly good fluid. I think I learned a little from that lesson. Test first then change, not the other way around. Oh yah, and listen to the pros.....