Been having problem trying to solve an oil leak problem. I have already had the valve cover gasket, oil pan gasket and (at Winfred's suggestion) oil cannister housing seal changed in hopes of stopping this pesky oil leak. Unfortunately after doing the work there is still a leak. A friend looked at it and suggested that the only thing remaining may be the rear main engine seal. Is changing the rear main seal a big job and does anyone have any advice or tips to change this seal?

Thanks,

-Ray
'94 525 ia