Quote:
Originally Posted by Coyote X
The theory behind them is decent. The tiny oil drops hitting the spinning crank take energy away from the rotation, but in reality at under 3000 rpms there just isn't enough stuff splattering around to matter. You might get a 0.01% increase in efficiency at low rpms.
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Actually its not there to prevent drops from hitting the crank. Its there to keep oil sloshing up from the pan from hitting the crank. Preventing drops from hitting the crank is futile because the drops come from the main and rod bearings. Some of this leakage is necessary to splatter some oil on the cylinder walls to provide lubrication to the rings.