MerconV vs atf+4 vs dex 3

[56Cummins]

All of these can be used in my 47re. The builders say dex3, some want lubeguard added. Mercon v manufacturer says it will work. Atf+4 is oem spec. Tractor fluid is what drag racers and truck pullers run.

The trans is based off a 727, it will run on lots of fluid, including type f.

I'm going to run dex3 for the break in, 1500 miles. What would yall run after that?

 

[BrianF]

The caveat is i don't own a 47 or a cummins of that era, nor do I have any real insight. If it were me, I would use atf+4. Why? It is a specced fluid, reasonably priced and it should be plenty robust. I ran the p1ss out of 545RFE with the oem fluid and it held up very well. I can't remember how long I had it in service, maybe 120 to 130,000km. Came put smelling fine and darn near as pink as it went in plus zero shudder or shifting issues.

 

[Rand]

I would generally think atf+4 would be the best.. but if you trust your builder I'd use whatever he says.

 

[mattwithcats]

Instead of Dexron 3, I would use a TES-295 fluid.

Same viscosity, but full synthetic…

Used in garbage trucks and heavy machinery…

On-Highway Fluids

Allison Transmission approved fluids are tested to meet our stringent requirements, which ensure maximum transmission durability with minimal downtime.

www.allisontransmission.com

 

[56Cummins]

Emailed Kendall(certified mercV) what they would suggest detailing what I had and wanted out of the fluid. They sell tes295, dex3, UTO, and mercV.

Holly responded:
"VersaTrans ATF is the closest match to what they call for in the 47RE, which is the Mopar ATF+4. If you can get the VersaTrans, that would be the best bet!"

Catalog answer. Would be fun to talk to an engineer in the lab. Thanks for the replies everybody.

 

[tshephard]

Seems like:
Anyone selling materials for a 47RE would be expecting ATF+4 and
would specifically tell you if those materials need other.

I'm a fan of the ST