On this episode of The Dirt, we hear from a Chevron Lubricants expert on the importance of hydraulic fluid for construction ...
the automatic transmission fluid or ATF performs the same tasks inside the automatic gearbox. The ATF is a hydraulic fluid that enables the gearbox to change gears by engaging the clutch packs.
Hydraulic oils today need to provide longer oil drain intervals, better stick/slip characteristics, increased efficiency, ...