<!-- from fixya rte -->How. To change Rear main seal - Cars & Trucks

SOURCE: how toreplace rear main seal in 92 F150 4.9 inline 6

One thing you may want to try especially if you don't have a heated garage is a bottle of Bar's leak rear main sealer. I had a leak big enough to cause my clutch to slip and it worked for me. I figure in the spring I'll replace the seal, maybe.

SOURCE: oil leak out the rear main seal on a 2000 ford explorer

First, the easiest way IS to remove the transmission, it is a one piece seal, if it were a 2 piece, you would need to remove the oil pan and Rear Main Bearing Cap which in my opinion is alot tougher. When installing the new seal, make sure the the end of the crankshaft is clean of debris, lube the seal before sliding it over the end of the crankshaft to ease installation and some like to apply a thin coat of high temp sealant to the outside surface of the new seal to ensure no leakage. When reinstalling the flywheel/flex plate, proper torque is key because you dont want it working loose and having to remove the transmission again.

SOURCE: how do you change a rear main oil seal in a 2000 toyota celica gt

First of all, be certain that the leak is in fact from that seal. many leaks travel to that area.

To change the seal is fairly involved, you need to pull the trans and flywheel. There are some specialzed tools involved. Do you have manual or automatic? Manual requires clutch plate alignment on re assembly, by the way , if manual, be sure to change the release bearing and pilot bearing at minimum. Commonly it would make sense to change the clutch during this process....you're already all the way in there..