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· Moderatly Old Fart
4,354 Posts
I was a victim of that hole two summers ago, with a nylon timing gear piece in the oil pump. What was explained to me is that when the oil screen is all gunked up and the screen is blocked, the suction will pull the screen up exposing the hole. The hole will allow oil to circulate in the engine.

It was thought by Ford that it was better to get dirty oil than none at all. They know thier marketplace!!!
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