Decided to do a UOA on my 1993 BMW as prior to this sample, I had the VCG leak and the PCV hoses were in bad shape.
I was also curious to see how the Penrite oil was holding up after some longer trips. Seems nothing appears to be amiss. Only trouble I note with the car is lifter tick.
Insolubles may be the result of the crusty/flake [censored] on the underside of the valve cover. I did try to get all of it off with some Kerosene, as it was pretty bad.
And Here's the Thread with Valve-train Pictures.
Thoughts, Opinions on the UOA?
I was also curious to see how the Penrite oil was holding up after some longer trips. Seems nothing appears to be amiss. Only trouble I note with the car is lifter tick.
Insolubles may be the result of the crusty/flake [censored] on the underside of the valve cover. I did try to get all of it off with some Kerosene, as it was pretty bad.
And Here's the Thread with Valve-train Pictures.
Thoughts, Opinions on the UOA?