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Reply to "Engine Oil Overfilling"

I agree there is risk of runaway on a modern diesel engine but before 2000 most vented crankcase blowby to the atmosphere by way of a blowby tube, not back to the intake.
As said near the top on an older engine a bit overfull isn't going to hurt as long as the crank doesn't whip it up.
I have several diesel engines that call for amounts not in one gallon increments. They have been getting an extra quart for over a decade rather than having a quart left over in the jug.
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