Quote:
Originally Posted by vonheine
Many of the modern lubricants are harmful to old gear boxes and differentials because they will destroy bronze bushings, thrust washers, or spacers, anything made of brass or bronze.
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I've heard this rumor for years, so a number of years ago, for an experiment, I put a bronze synchronizer ring in a glass jar w/90-140 gear oil and let it sit for a couple of years and nothing happened to either the ring or the oil.