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How do I replace the rear seal in a f-250 diesel 4x4?
on 2002 Ford F-250 Super Duty

I took my truck to the Chevy dearlership and they over filled my oil and now my rear seal is leaking. I have been told that I will have to lift the cab to drop the transmission. Is this true and are there any other options if it is?

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1 more answer
First be sure the rear main is leaking. It can be very deceiving as their is a more normal occurrence where oil from a hard to find source runs down and around convincing you that it is the rear main. Mine did this and when I went to the Ford dealer they said they had never actually replaced the seal as it turned out in 100% of cases it was just an oil leak; much cheaper. To change the rear main you have to pull the very heavy transmission which requires a very heavy jack that most shops around here don't have. Check the small thing first. Never take a high quality race horse (Ford) to a goat farmer (Chevy dealer).