Don't normally do oil analysis on cars (airplanes, yes every oil change), but I'm going to get some paint and body work done so I did a DIY compression check and borescope inspection, and sent in for an oil analysis before investing the money.

Results attached. Looks pretty good at 153K, I suspect that 1 ppm lead is from the recently changed oil cooler (heat exchangers are typically soldered).

 

Remember that with oil analysis, just like with aircraft engines it's not the individual report that counts, it's the trends in two or more reports.

 

Yeah, don't want to wait another 5K or 10K before getting the paint done. The average baseline for the engine type is also a useful reference and since all of my wear numbers are low and match the averages I'm good with that.