Oil leak. 450 diamond

[jim wick]

I thought it was the pan gasket. Nope, not so lucky. It’s on the port side. Just above where the pan gasket and rear main seal meet. I have been told by a great retired cummins marine factory mechanic that it looks to be a freeze plug or plate gasket in there. I hope my terminology is correct. Transmission needs to come off and all seals/gasket/plugs need to be redone. I have a company willing to pull it apart, seal it up and put it back together. 2 guys for a full day. Two grand. Any thoughts. Hints. Pitfalls. All input appreciated. I hate to spend 2k to save a gallon of oil a year but I think I should just bite the bullet.

Topic

[jim wick]

Good luck

Hard to see much

[jim wick]

Photos

Photos are tough. It’s on the outboard side. Behind the aftercooler. Behind some wiring. Against the hull. With a mirror I can see it on a couple of the aft pan gasket bolts but it comes from just above the pan. Then it makes its way Aft over to the (Bell housing?) and then down.

[jim wick]

Leak

I keep a cookie pan under it. I’m guessing one ounce oil every two hours of run time. Thanks rob.

[Rob Schepis]

You left out two important things

Good photos of exactly what your are seeing.

If you clean it all up 100% and put a diaper under it how much is accumulating in a certain timeframe?

[Author]

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