Looking for some input here. Dealer recently replaced rear differential fluid with synthetic and shortly thereafter the seals failed and leaked into rear brake drum. This in turn warped the front rotors which were only a few months old themselves. The car is a 2000 4runner 4x4 with 138,000 and has had no abuse.
My take on this is that the dealer should never have replaced the fluid with synthetic on a high millage car but the dealer insisted that synthetic really didn't have anything to do with it, that the seals were ready to go anyway so I forked over $600 to replace the seals and redo the rear shoes. Does anyone agree/disagree? I think I need to go back and fight this one.
Rear axle seals fail after switching to Synthetic Differential fluid
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