I am looking to buy a B47 engine. I have found a X3 with 72k on clock with very good BMW service history according to the in car service record. It has 10 stamps roughly one a year.
Generally the car appears mechanically sound. But when I check the oil it is jet black, like nothing I have ever seen before. No translucency at all. According to the service record BMW changed the oil 7 months ago at 68k. Is it normal for the oil to be this black after only 4k miles?
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