Originally Posted by 360view
When reading that 24 year old Lubrizol paper again,
the words
“fill for life”
caught my eye.

Are there 1999+ Chrysler transmissions where factory ATF+4 is not recommended to be changed, ever?

My fuzzy memory is that a few of the Mercedes
and/or Getrag auto trans
were “fill for life.”

What company’s trans fluids were in those sealed units?

I would not think that in 24 years
that there would not be ANY
atf improvements.....

Those fill for life claims are a little misleading. I believe it was stated for 100K miles under "normal" use. Nearly every single vehicle in use falls under the "severe" use catagory.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.