Join Date: Nov 2016
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Extremely Sludgey Oil?
So, this is the first oil change I've done on this car since I've bought it - put far fewer miles on it than I expected to by this point due to an extended stay at the dealership. So, last oil change was probably at least 5 months ago, probably ~4000 miles. Maybe close to 4500.
I've changed oil in lots of motorized things in my life, and I generally know what looks good and what looks bad. This looked pretty bad. It's about as dirty and sludge-like as oil can possibly be while still looking like oil, IMO. Even my friend who helped me out said in all his years of owning BMWs and other performance cars, this is the worst-looking oil he's seen. Pretty much looked like mud and chocolate syrup mixed together. No metallic particles or any other foreign matter though.
Carly confirmed that the car has now had 13 oil changes (including this one) over its ~79,500 miles, which seems fine. Previous owner made a point of doing it every 3500 miles or as close to that as possible, never used anything but the OEM oil change kit. So I'm wondering how it could have possibly looked so bad coming out. Given the delicacy of the rod bearings and VANOS, I'm a bit concerned.
Oil is getting sent to Blackstone, so will be interesting to see what they say. Is this normal? Is it supposed to look this dirty? This is the first time I've specifically done an oil change on an S85 car, but I've never seen oil look like this before...only thing that came close was a heavily abused Briggs & Stratton-powered Sears lawnmower after lots of abuse and neglect...
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