Quote Originally Posted by Gman View Post
I was thinking that the port in the block would likely be for an oil cooler line. The idea that when the cooler isn't used, an O-ring on the bracket doesn't strike me as the best idea, particularly when the oil is under pressure. Putting a bolt in the hole with a copper or aluminum crush washer sounds better to me.

...but then I would never think that a plastic oil pan was a good idea.
The "O-Ring" in question.