Originally Posted by 360view
I wonder if one of the big 18 wheel trucking companies like JB Hunt has data on which ATF performs best on the road, as many have gone to automatic transmissions to attract more drivers to the profession.

Data-centric Amazon might be looking at this in their delivery van fleet, as well as Fed Ex, UPS, Postal Service.

What are Cummins Ram auto trans rebuilders telling customers concerning ATF?


Semi trucks "automatic" transmissions are not true automatic transmissions, they are automated manual transmissions, I am not sure what they use as fluid, tried googling it and couldn't find anything...


The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.

JB Rhinehart, Realist

A-Body's RULE!