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I just completed my first Blackstone Labs oil analysis, so I thought I'd hop on here and contribute my piece.
Some background: I have 6 road course track days, 2 autocross events, and about 20 dragstrip 1/4 mile passes on the car. Embarrassingly enough, this is the first time since the break-in maintenance that I've changed my oil. It was incredibly easy to do (especially with the DIY section here on M3Post), and I'll definitely be following a shorter interval in the future.
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