The average cost to repair an oil gasket leak is $396 to $511 if the oil pan requires resealing, and $249 to $348 if the valve cover gaskets require replacement. RepairPal.com bases these prices on the national average for all vehicle makes and models.
It may be necessary to replace the oil pan if road debris causes the oil gasket leak. The gaskets collect oil from other moving parts in the vehicle, and the mechanic should verify that the oil is leaking from the oil pan and not buildup from another leak.
The mechanic repairs an oil gasket leak by checking the oil pan for damage and then removing the oil pan, gasket, oil and filter. He cleans the oil pan; installs a new gasket, oil and filter; and finally runs the engine to check for any additional leaks