Between these 3 companies which one is the best in synthetic fluids and in what order? This would be for ATF fluid, rear end differential fluids, and engine oil.
[ July 12, 2006, 04:09 PM: Message edited by: stingray427 ]
Are these going to be used in an old Vette motor, or has the engine been rebuilt with modern elastomeric seals and gaskets?
What fluids are you currently running and what sort of improvement are you specifically looking for?
A while back I used synthetic oil in my 5.0 Mustang GT and the oil leaked out of the valve cover gaskets. I switched back to the regular oil and leaks stopped. Then one time I left the synthetic in too long and had to change the valve cover gaskets as they wouldn't shrink back when I used the regular oil