Originally Posted By: atikovi
Originally Posted By: maxdustington
The extra oil is going get mixed by like crank like an eggbeater, aerate your oil, then starve your oil pump and smoke your mill!
Someone do the math please. Lets say the oil pan when full is 8" x 18" or roughly 150 square inches of oil area. How much will the level rise by adding 1/4 quart? And how far below the crank is the full oil level on a typical car?
A quart is 57.75 cubic inches; a quarter qt would thus be about 14 cubic inches. Not quite 0.1 inches of pan rise.
Back in the olden days I do believe some classic V8's would be run with an extra quart in the sump, out on the dragstrip. The engines would pump the oil up into the heads and it could not drain back fast enough.
When driving around, some portion is going to be out of the pan. I don't think it matters as to engine rpm, but maybe high rpm will have a bit less in the pan than at low rpm?
Lastly, a good hard corner is going to slosh it around more than that 0.1" I bet.