Quote:
Originally Posted by Dannys M3
Try running yours to 15,000 miles. I am sure if I only put 5000 miles on my oil it would read lower. I don't think running shorter oil change intervals is a cure for bearing clearance issues.
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His motor (actually is 9ppm) for his 5,500 mile interval equals 1ppm of lead for every
611 miles driven.
Yours (14,399 / 45ppm) = 1ppm of lead for every
320 miles. You have almost double the lead reading.
From my analysis of 45 samples show an average of
1ppm for every 1,358 miles so far.
It's common practice to change oil every 5-7,500 miles. 15K is a really long time.
0.02