New Gear Break In Question
09-20-2004, 09:41 PM
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New Gear Break In Question I am getting ready to have a set of GM 4.10 gears installed in my 02 Z28. What would be the best way to break them in? Also, should I use non-synthetic gear oil and GM posi additive for a specific amount of miles (for break in) and then switch back to a synthetic, w/additive? 
09-20-2004, 11:51 PM
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on your first drive with them upshift and down shift a couple times, and drive it long enough for the gears/fluid heat up. then take it home and let it completely cool off.
change the fluid again after about 500 miles.
thats how i do it.
change the fluid again after about 500 miles.
thats how i do it.
