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      07-26-2009, 03:31 PM   #1
ScheerSpeed
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Overfilled engine oil

I just did an oil change myself and added 8L of the BMW/castrol 10W60 from the dealer.The first day I drove the car around the oil level showed plthat it was perfect at the top, and then the next day I started it up and checked just to see if maybe some oil spilled if I left a screw loose and Tommy surprise it read "engine oil too full" in the idrive. How much Over could it be if I only added 8L? Should I drain some out or should it be ok the way it is?
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      07-26-2009, 03:36 PM   #2
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there are 2 drain plugs. did you drain both?
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      07-26-2009, 03:37 PM   #3
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Originally Posted by bobbyd1961 View Post
there are 2 drain plugs. did you drain both?
No I didn't know that. Where is the second one? I guess a small amount must have stayed in?
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      07-26-2009, 03:38 PM   #4
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About how much should I have to drain out?
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      07-27-2009, 12:34 PM   #5
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... anyone?
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      07-27-2009, 12:55 PM   #6
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The front sump is just 1/2-liter, so hopefully that's the one you forgot. I guess you learned the hard way to do research before doing maintenance on a complex car like the M3.
If you forgot to drain the front sump, you shouldn't be overfilled with 8L. Do a search for the proper way to check oil level and go from there; I wrote a detailed post not long ago. If necessary, you can drain from the front sump, as it's only 1/2L, but don't do anything until you check oil level properly. Good luck.
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      07-27-2009, 01:03 PM   #7
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As elp_jc says, the front pan is the smaller one, the rear is the main.

Check posts #1 & 15 here, as well, for drain plugs:
http://www.m3post.com/forums/showthr...ght=oil+change
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      07-27-2009, 08:24 PM   #8
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yea i got the rear one, but forgot the front. i measured how much oil came out of the engine and it was about 7.5L, and i added 8L, so im not going to bother, because .5L isn't really all that much. thanks for the help!
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      07-27-2009, 08:46 PM   #9
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Quote:
Originally Posted by ScheerSpeed View Post
yea i got the rear one, but forgot the front. i measured how much oil came out of the engine and it was about 7.5L, and i added 8L, so im not going to bother, because .5L isn't really all that much. thanks for the help!
I assume you changed the filter, too? There's about 0.1L in the bottom of the filter housing, too.
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      07-28-2009, 09:56 PM   #10
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Quote:
Originally Posted by GregW / Oregon View Post
I assume you changed the filter, too? There's about 0.1L in the bottom of the filter housing, too.
yea... and probably .1L soaked up in the filter...
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      11-09-2010, 01:27 PM   #11
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I made the Same Mistake.
I drained the rear sump only and also replaced oil filter. I added 8.5l (or a little under) and checked my oil level after a drive and its at the max level. I hope i dont get a message saying oil level too high or i will be kicking myself more than what i already am!
The only thing that made me check is because i had a spare sump washer!

Lesson learnt to read before assuming!
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