My vacuum pump leaks oil it is the dodge pump with the power stearing piggy backed to it, seems to be leaking betreen the to pumps, If it was the power stearing pump it would leak ps fluid. It appears to leak engine oil. also seems that the vacuum pump would probally be under a vacuum at the seals and not leak. The vacuum part also has a oil pressure line to lube the vacuum part has any one had one apart to replace seals? This is the pump that would be stock on a 92 cummins powered dodge.