I posted earlier about my 04 3.6 L that sprung a small leak on the driver's side output shaft seal. Dealer I trust quoted $355 for labor/parts to replace the one side.
My question: I read that if the leak is small that you can add about 1/3 bottle of engine stop leak to the diff and that might swell the seal enough to stop the leak in about 500 - 1,000 mi. Is this a good option to try first? Is it a good fix, or simply a temporary half ass fix? If replacement is the best option, can I go with just the one side that is leaking, or should I go both output shaft seals at the same time? (dealer said cost would double to do both). Just looking for a good alternative to the replacement route.