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      10-25-2013, 07:12 AM   #1
dorkbydesign
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Adding Oil

I just did an oil change on my 2007 320i and put 4.5L of LL01 inside. A few days later I checked the oil level on the iDrive and it was already a few blocks lower than maximum so I put an extra 1.5L in. A few days after that, I checked again and it was at the same level, so because I am a genius, I decided to put another 1.5L in.

Now the car is not as responsive and I was just wondering if maybe my oil level sensor is broken. It still is at the same level (not full) and it could not have possibly leaked/burned that much oil that fast.

what do?
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      10-25-2013, 08:37 AM   #2
froop
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When it's a few blocks lower than maximum normally 0.5L would be more than enough to get it up to maximum again. Adding 1.5L would normally already overfill it. Definitely something is wrong.

One option would be to drop all of the oil again and refill. Since the oil is relatively new it should be fine to just recycle it as long as you don't introduce any contaminants in the process. If you still have the same problem then I'd get it checked out.
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      10-27-2013, 06:55 AM   #3
DR-JEKL
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Damn dude so your saying 4.5L is the normal 'crankcase capacity' and you have overfilled by 3L!?!?!

Please dont keep driving, drain a few litres out at a time until you have 3L in your drain pan (don't recycle the oil also, as their would be microscopic contaminants in your drain pain etc that could cause minor damage)

FYI overfilling the engine is extremely dangerous (almost on par with underfilling) as it causes foaming and additional stresses on engine seals etc

Also I have heard when your battery is dying this can cause the low engine oil level error messages (unsure of how accurate this is, but just prior to my battery dying i did get this message)
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      10-27-2013, 08:08 PM   #4
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Time to drain your car (filter will be OK so no need to change) and refill to correct capacity. And while you're at it replace your oil level sensor - it's cheap and sounds like it's not working.
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      10-29-2013, 07:20 AM   #5
dorkbydesign
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Do you guys have any instructions on how to change the oil level sensor?
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      11-05-2013, 04:06 AM   #6
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It's underneath the engine, near the drain plug.
Take undertray off, disconnect plug, and 3x 10mm bolts. Drain oil first if you don't want to make a mess.
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