Quote:
Originally Posted by rdruss
East Coast Gear says Royal Purple is about worst gear oil. They recommend
Lucas 80W90 non synthetic. Go to their site and check it out.
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85-140 for standard conditions, 80w90 for cold conditions. 85-140 is what I've been running since I regeared 3 1/2 years ago and haven't had a single issue since. I do still run mobil 1 synthetic in the transfer case though.
ECGS Gear Oil Recommendation