I have a new 2004 5.4 v8 and went to change the transmission fluid.
To my great surprise, no one knew what to put in Mercon V or not.
The door says transmission code "B". There is no code "B" in the book which came with the truck. My son has a V8 5.4 diesel with two package and his trans. code is "B" also.
Anyone with any experience with the 2004 trans. code.
I need to know if it needs the straight Mercon, if it is a 4R100 or E40D.
Thanks for any help.

 

A bunch of people will knock this, but pennzoil has a multi-vehicle ATF out now that works on 98% of auto trannys. It will work on all ford fluids, minus type F. You can buy it at your local autozone, and take the guesswork out of tranny fluid changes.

http://www.pennzoil.com/products/tra...ds/mv_atf.html

 

B is the 4R75e, its the new tranny for the new trucks.

Donno on the fluid.

 

thanks.
I will look up the 4R75e tranny.
Any good site ideas to find out about the transmission fluid type?

 

The 4R75E transmission takes Mercon V fluid. The 4R75E is very similar to it's predecessor, the 4r70W, which uses the same fluid.

 

Thanks.
My dipstick, yes, I have one in my 04-F150, says Mercon V, but the book which came with the truck does NOT list it.
I checked the Ford site, but it only says it is a maintenance free tranny.
Mercon V it is.
I find it odd, that the book they give you says to change the fluid at 30,000 miles and the Ford site and literature says it is maintenance free!!!

 

I have a 4R75E disassembled on my bench right now, waiting on parts. It uses the same type friction material on the clutch plates and bands as the late model 4R70W. If I owned one I would keep changing the fluid at 30,000 miles, regardless of any
"maintenance free" marketing hype.

 

Cool, I figured it would be the same fluid as the 4R70w, but wasn't sure b/c I know the new Torqshift requires a different fluid. I'll update my tranny page.

Adrianspeeder

 

in my book, i bought my '04 that i ordered in 9/'03 and got it in 10/'03. its an fx-4 . i've been getting some help from adrianspeeder.

 

thats where i log all my maintenance and dealers enter any repairs they do shows up here. its a good tool for recalls, warranty and maintenance down the road.