Quote:
Originally Posted by minn19
A couple of quick questions and thanks in advance for this thread/info. It has been extremely helpful.
I've read the track prep guide and I'm wondering why people are doing the oil/diff fluid again at 1500 miles after the 500 mile change. Is it purely for peace of mind etc?
Also I believe I read the differential fill/drain bolts should be torqued back to 24 lb foot. Does this sound correct?
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Glad the thread has been helpful.
The 1500 mile number came from some GM manual. I can't place which one at this time, but it wasn't just made up. The second change is helpful to get all of the break in grease, fluids, and oils out and keep it happy for many miles to come. Especially after track use, the rear diff gets worked REALLY hard and you'll definitely notice the color and smell afterwards. Will the car be fine if you skip the 1500 change? Sure, you may never notice the difference. But for me, it's a must do.
As for torque, I didn't bother to check any manuals on it. I used the "feels about right" method. Snug, and then some. Never lead me astray.