ajfinoak

Dealer changed my oil and filter last month on my 08 250 with 18K miles. Just checked and it is overfilled .5 qt. Any risk with this? Should I go back and have them drain? Thanks much!

giantdefy

iTrader: (1)

Too much oil will cause the crankshaft to slap the oil in the pan causing air bubbles to form in the oil (the egg beater effect). Air in oil equals less oil circulated throughout the engine, which is not good. I had a mitsubishi several years ago and whenever the oil was just slightly over the full line, the engine would start knocking really loud due to the hydraulic valves getting filled with air, Id drain it to the correct level and the noise would go away.