Reply To: 1963 Evinrude oil leak

[Don]

OK, so you have not actually pressure tested the unit, correct?  All the new seals/orings and gaskets can not compensate for a damaged or porous casting.   You also report poor water pump output at higher RPM.  I’m remembering something that Frank Robb posted awhile back…  Sometimes these castings crack behind the water inlet cover about the AV plate.  Does oil leak out of the unit when it is just sitting in the run position while out of the water?

Like others have said, you might also just be dealing with oil exhaust drool/residue.  What does the gear lube look like when you drain it out??