Originally posted by MTI
Just so long as the end of your dipstick doesn't fall off . . .
But seriously, you want the oil level between the under and overfill lines. The danger zones are being under or over. Underfill is obvious, not enough oil to lube and cool. Too much oil and you run the risk of having your crankshaft turn the oil into a mocha latte topping when it chuns through the excess, which may sound nice, but is worse than having no oil.
I agree. Most dealers don't even perscribe to this practice. The important issue is not to go under or over the lines when the engine is in operating temp.
That's why you don't fill it to the full line when the engine is cold!