Here's a question and some responses from the BITOG forum about differential flushes;
http://www.bobistheoilguy.com/forums/ub ... ost1166402
I was wondered if any here do differential flushes or just regular drains and refills and aside from kerosene if there might be other products to clean the inside of the diffs. Auto-RX looks like it might be an effective ester based metal cleaner but do any have other recommendations.
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