I have been reading JeffreyT's thread titled "4R100 Automatic Transmission flush-pics and video" (https://www.ford-trucks.com/forums/1222821-4r100-automatic-transmission-flush-pics-and-video.html) and it got me thinking that one of the maintenance items I haven't done is a transmission fluid flush.

Since my truck was a fleet truck (owned by Valley Electric in Washington), I was lucky enough to get the service records which show that a remanufactured transmission was installed in late January of 2006 at 154,615. (I have 230K now) I can't see from the records where another transmission fluid exchange was done so I assume it's time to get it done.

As part of my effort, I wanted to confirm that I have a 4R100 transmission with a "deep pan" (which I think Mark K has suggested was the case for all 99 and later 7.3 SuperDuties). I took a picture of a sticker on the side of the transmission above the pan (which incidentally has 20 bolts):



Is there anything else that can be learned from this sticker?

How long should I expect the transmission to last, given the following information: (1) I don't think the truck was being used by Valley Electric for towing but I was told the truck was being used to service cell sites in the mountains - presumably with frequent use of 4WD. (2) I currently use the truck about 3,000 miles per year, most of which is to commute to the marina where our boat is docked, and then to move the 22K lbs boat on a trailer from dry storage to the launch ramp (about 1 mile at no greater than 10 mph)? I've launched the boat less than ten times.

I did change the transfer case fluid when I first purchased the truck (at about 227K).

Thanks.

 

Well, since you've already read where the number of bolts has nothing to do with anything, I can only assume you also read my post where I stated if it has a drain plug it's a deep pan and if it doesn't, it's the shallow pan, yes?

So that now begs the question, do you have a drain plug?

Stewart

 

Yes - there is a drain plug.

But I guess I should have separated the sentence in two parts. First - confirming that it is a 4R100 transmission. I've seen references to BTS and JW transmissions so I want to be sure some other type of transmission wasn't inserted - hence the reference to the sticker. Second confirming the deep pan.

 

If it's an automatic, it's a 4R100.

Again, if it's an automatic, it's a 4R100. It doesn't matter who built it. It's a 4R100.

Yes, it's a deep pan.

Stewart

 

Thank you.

And now that the remanufactured transmission has 80K miles on it, with the usage I referenced, how long should I expect it to last assuming it was/is properly serviced?

 

Another 332.6 miles or two and a half weeks, whichever comes first.



Obviously I'm just kidding. There is no specific life expectancy for a trans in our trucks. There are guys with well over 200k miles on their original trans. Others had to replace them before 100k miles.

Stewart

 

I've see them run well over 300,000 miles.