Engine Oil Overfill Question

hl0m4n · 05-21-2008, 02:06 AM

if a car is overfilled with engine oil no more than .5 quarts over the normal, will it cause a problem? can it wait until the next oil change or should action be taken on fixing it? is it a big deal?

yoyeewee · 05-21-2008, 06:27 AM

if you're only 1/2 quart overfilled, you'll be alright. if you're more than 1 quart overfilled, then i'd drain some out.

FirstClass · 05-21-2008, 07:13 AM

Overfill doesn't hurt the engine afaik, but I think some moving part will hit the top level of oil in the pan, causing you to lose power and making it nice and frothy. (crankshaft maybe? don't know as much about engines as I should)

ctgazer · 05-21-2008, 07:17 AM

just drive it hard for a couple hundred miles....should burn off some excess oil

Icedog_16 · 05-21-2008, 07:19 AM

Quote:

Originally Posted by FirstClass

Overfill doesn't hurt the engine afaik, but I think some moving part will hit the top level of oil in the pan, causing you to lose power and making it nice and frothy. (crankshaft maybe? don't know as much about engines as I should)

It's the crankshaft.

To the OP, I don't think that less than half a quart will cause problems. It it was really overfilled, you'd run into the foaming issue FirstClass mentions, which would cause improper lubrication of the engine's parts.

05-21-2008, 02:06 AM	#1
hl0m4n Brigadier General Drives: BMW Join Date: Nov 2006 Location: NY Posts: 4,829 iTrader: (41)	Engine Oil Overfill Question if a car is overfilled with engine oil no more than .5 quarts over the normal, will it cause a problem? can it wait until the next oil change or should action be taken on fixing it? is it a big deal? __________________ Cars: 07 335i ► 09 328i ► 11 328xi ► 13 M3 Reviews: 335i Supersprint Exhaust, C/F Trim Wrap, Alcantara Boots, VMR V710, Saikou Michi OCC, Royal Steering Wheel For Sale: Want To Buy:
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05-21-2008, 06:27 AM	#2
yoyeewee Major Drives: 2007 BMW M6 coupe Join Date: Jul 2007 Location: Orange County, CA Posts: 1,046 iTrader: (0) Garage List 2007 BMW M6 [0.00] Previous Ride 2006 ... [0.00] Previous Ride 2007 ... [0.00]	if you're only 1/2 quart overfilled, you'll be alright. if you're more than 1 quart overfilled, then i'd drain some out. __________________ 2008 335i coupe Atlantic Blue with Black Leather Steptronic ZSP ZPP NAV PDC COMFORT ACCESS REAR SUNSHADE HEATED SEATS HD RADIO SIRIUS USB/IPOD 20" Klassen K5.1 3-piece wheels w/Toyo Tires Job Design Body Kit M3 Trunk Spoiler Eisenmann Exhaust Eibach Pro-Kit Springs
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05-21-2008, 07:17 AM	#4
ctgazer Major General Drives: a dilapidated ride Join Date: Feb 2006 Location: canada eh! Posts: 7,952 iTrader: (10) Garage List 2006 e90 [0.00]	just drive it hard for a couple hundred miles....should burn off some excess oil __________________
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