I'm trying to determine what transmission model the 5.4 liter 24 valve engine uses. Are they the same for 2004 - 2007 model years? I see in the transmission forum it lists the 4R75E and 4R70W both for '04 - '07 F150's. I'm assuming it's the 4R75E. Is there somewhere on truck that lists this?

The reason I ask and I appologize if this has been discussed at length already. Alot of what I'm reading about tranny fluid change intervals on this forum centers around 30k. But in doing a little checking on-line I see that the model 4R75E Transmission has a sealed case and is virtually maintenance free. Am I to believe no fluid changes for the life of the vehicle.

Below is an excerpt form this link: http://www.ford-trucks.com/specs/2004/2004_f150_2.html


Matched to the new 5.4-liter V-8 is a new 4R75E automatic transmission, an evolution of the 4R70E used on the current F-150. Upgraded to handle the torque of the 5.4-liter engine, this transmission shares patented upgrades with the 4R70E, which backs the 4.6-liter V-8:

A redesigned torque converter improves launch performance and increases efficiency.
A turbine speed sensor improves transmission control, providing the basis for fully electronic shift scheduling to limit "hunting" and to fine-tune shift speed and feel.
Increased microprocessor speed improves responsiveness and precision of the control system.
"Smart" fully electronic shift scheduling knows what the torque will be in the next gear so it chooses the shift points based on the vehicle's projected performance in the next gear.
Coupled with the electronic throttle strategy, the transmission computes the output torque required to maintain the vehicle speed, and chooses the correct gear and converter state accordingly.
A sealed case and lifetime transmission fluid make the transmission maintenance free, while adaptive pressure control maintains consistent shift feel over time.

 

The 4R70W is included in ANY F-150 with a 4.6L engine. The beefier 4R75E is attached to trucks with the 5.4L engine, IIRC. The 4R75E is capable of handling the higher torque output of the larger engine.

I believe this page will help decode your VIN and tell you which trans you have to be sure.

 

Ok... decided to check things out from the Dealer. They looked up tranny model via vin # and it was in fact the 4R75E. I also inquired as to the scheduled maintenance for this tranny, and they confirmed my earlier discovery that this tranny is in fact maintenance free. No fluid or filter changes till at least 150,000 miles.

 

I still service mine every 30K. I don't buy that "maintenance free" garbage on that transmission.

 

And what would be the difference between the 4R75E and 4R75W ? Are they the same ?

 

Quintin, Ford supposidly designed this tranny with a sealed case and classified it as "Maintenance free". How is this design different from earlier versions that aren't classified as such. You would think Ford would be setting themselves up for trouble if they weren't confident it could go that long, wouldn't they? or maybe not......

Rafa, I'm assuming you meant the 4R70W model. I believe this tranny was used on the 4.6 16-valve triton engine, whereas the 4R75E is for the 5.4 24-valve triton.

 

that is in direct contention with my owners manual. my manual says to change the fluids at every 30k miles

 

I dunno, IMO it's not totally sealed like a 5R55 or something, it's still got a dipstick. Besides, transmission fluid and filters are cheap, overhauls or replacements ain't.

 

Depends what Tranny you have. My manual says that also, but only if you have the Model: 4R100 or Torqeshift tranny. I believe the 4R70W would also fall under that 30k intervals. i think those transmissions use 4.6 triton or earlier version of the 5.4 16 valve. If you have the latest 5.4 24 valve triton and the 4R75E tranny they do not require maintenance or at least not till 150,000 mi. that is quoted directly from the dealer. They looked it up via my vin#.

Quintin has a point, for a little piece of mind you may want to change it a couple times at least in that period.

 

can't see where it says anything about the tranny.

 

I've got a late production 06 with the 5.4 3v. They may call it a sealed, no service transmission, but I guarantee that it'll get the fluid changed at every 30k interval.

I had the E40D tranny in my 1993 Bronco last ~283,000 miles by using this method. The 302 only made it 1/2 way though.

 

I changed my oil today on my 05 F150 and I noticed a plug or seal missing on the front of my transmission. It is not leaking. So I am curious what will happen if I don’t fix it? Can anyone help

 

It's an inspection hole for the torque converter. This is what you need: