Quote:
Originally Posted by tommy d
I have a bunch of free Valvoline 75/140 synthetic gear lube that I would like to try. We have a Dana 60 and have had 0 problems in 9 years of hard racing so I'm afraid to change anything. What do you guys think? Just looking for consistency. We now use 80/90 conventional.
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I use it in my Dana and the gears last literally for ever. I am sure I get way over 1000 runs and have never had one fail with the auto trans. I did try some lighter oil and the gear wore out fast. No improvement in ET with the lighter oil so I went back to the Valvoline synthetic.