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      11-24-2010, 11:39 AM   #7
KJM3
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Drives: 2011 E92 M3 6MT
Join Date: Sep 2010
Location: East Tennessee

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Look around the drain plugs, unless you get an anal tech that washes it down with brake clean there will be some dirty oil around the two drain plugs.

Other than that its a trust thing, you can see the oil pretty plainly with the oil filler cap off but its hard to tell by that.

The only way to know 100% for sure is watch them or do it yourself.