X5M LCI Break-In Service
In the past when motor oil is changed, I've sometimes asked the person doing the change or flush to siphon off a quantity to send to a lab like Blackstone for analysis. I was curious whether anybody has done this for a M car break-in service (the 1,200 mile one...) and had opinions on whether it is instructive or informative in any way.
I'm 550 miles in!
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