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Rear main oil seal

(1993 Chevrolet Lumina)
in Dayton, OH on June 15, 2009
where is the rear main oil seal located?
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Popular Answer
Rear main seal is located at the rear of the engine between the engine and the flywheel or flexplate/torque converter. To replace the seal the transmission must be removed which is a big job.
on August 20, 2010
On all engines the rear main seal is located at the extreme back end of the crankshaft where it passes between the oil pan and engine block. To replace it requires dropping the oil pan and loosening the crankshaft. It is usually a two-piece seal (upper and lower) split in half.
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