the newer cars are a lot more critical than the older ones. i would occasionally overfill my 240s or 300s 123 and nothing would happen.

on my 350sdl though i once over filled oh maybe a quart and i noticed that on the highway the temp of the engine would rise....but if i slowed down five or ten mph it would drop back to normal.

i felt the oil was foaming and causing the cooling effeciency to drop.

the newer cars have everything compacted vertically to reduce hood height i think and so the normal level of the oil in the pan is closer to the crank. for this reason the newer cars have an oil level sensor too, i think, as the level is more critical and there is less room for error.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.