rear main oil seal....

[ponee]

is this hard to replace????/i have a leak there when the motor is running...425ci came out of a deville 78'......

[DaveM]

Are you sure it's the rear main seal? Did you check the oil sending unit? that could cause a leak at the back of the motor..

[ponee]

tried to find the sending unit its not in the book...where is it located on the engine.....???

[~JM~]

Should be one on the back of the block right above the bell housing.