2000 XL 3.0 Flex 2WD Automatic, 80K miles.

Last summer, I had my transmission serviced by a mechanic. In addition to replacing the ATF and filter, I bought a new pan. I had him replace the pan because I read that some guys here were replacing pans on their 2WD Rangers, pans that do not have drain plugs, with pans listed for 4WDs because they do have drain plugs and hold more fluid.

That seemed like a worthwhile upgrade and was cheap enough. The only difference between pans is that the 4WD version is deeper and has a drain plug. Also, the filter has a longer "neck," which I assume allows the filter to reach deeper into the deeper pan.

Anyway, I never bothered checking the fluid level after picking up my truck, but today (9 months later!), I see that it is over-full by more than an inch above the hash marks.

My question: Is there any reason that the dipstick measurements no longer apply?

It seems very odd that a professional mechanic would overfill so much without reason. My assumption was that a deeper pan should not matter to the dipstick because the dipstick measures the level from above. I assumed that the "extra" ATF at the bottom of the deeper pan shouldn't make the dipstick reading any less valid. How wrong am I?

 

Assuming 5r55e Tranny? Are you checking ATF level
after driving several miles until Tranny operating temperature >150f, with the Tranny in Park, with vehicle on level surface?
If ATF level still high, you can HandPump from the Tranny DipStickTube down to proper level.
This is how I change 2qts of Tranny ATF every 6mths, when I do routine Engine Oil+Filter changes.
I'm thinking your ATF DipStick level should be kept about the same, regardless of shallow or deep pan;
the deeper pan & more ATF volume should also help your Tranny run slightly cooler;
but hopefully some "experts" in the forum will comment on this.

 

Use of the word, "expert", will scare responders away. Me? I'm a gifted, bumbling rookie with a confession to make.
I failed to measure the volume of fluid which drained when I removed the original, already deep pan. My 4WD pan was deep but had no drain plug.
I installed an aftermarket (Dorman sourced) with a drain plug.
After installing a new filter and pan all I did was fill and adjust to the FULL mark after fully warming up the unit.
It took 5 quarts.
I believe your theory about dipsticks measuring from the top is accurate.
Sounds like your mechanic simply overfilled.

 

Thanks for the replies. So, it seems that the mechanic overfilled the transmission, which is probably why it is now leaking at the pan and ATF cooler. After being under the truck more today, I also noticed that when he dropped the tranny in order to replace a RMS, he forgot to reinstall two nuts on the cross member that goes over the transmission, and he cut the exhaust in two places rather than removing it correctly. Man, I need to find a good mechanic in Martinsburg, WV!

 

Yep, that's everybodies "holy grail"!
Problem is these auto shops (especially stealerships) are driven by time+money+profit, not by quality of end product,
so their business model is inherently in conflict with the customer.
Years ago, after getting hosed by several shops, gave up on this mythic quest & accepted the need to work on my own vehicles.

Video: Quest For The Holy Grail