The Mobilube 424 has a Hi shear film strength so it provides better protection and lubrication for your hard parts (bearings bushings planets) Hi film strength helps the clutches to hold heavy loads at hi temps with out breaking the oil film. With out the oil film its is certain death for a clutch pack. Also higher viscosity and a higher flash point. This helps the fluid to stay stable at hi temps and it will also dissapate heat easier. The Hi torque fluids are made to operate in wet clutch transmissions that cost thousands of dollars. Much higher quality standards than what we see in typical automotive transmission fluids. This is not mirical fluid for a trans that does not operate correctly make no mistake about that. its not the only good fluid out there for an auto trans. Bottom line is your transmission will run cooler, clutches will hold hi loads, Bearings and bushings will have the maximum protection and line pressure will be stable at most any temp And this fluid will not burn like Dextron or Type F.
Where do you find 424. Go to the mobil web sight and look for distributors. There are other brands that work just as well as 424 this is the one that I have used. Maybe Bruce can post some of the other brands.
Lonnie Diers