Well I switched to synthetic oil and would like to know what lab you are using? I have about 500 miles so far on the oil. I have an Oilguard bypass filter installed also. I'm going to change the Primary filter every 5000 miles and bypass filter every 15000 or so. I am still trying to figure it all out.

 

CTC Technical Services in Phoenix. I pick up the kits from my local Cummins dealer (Cummins Intermountain Las Vegas) when I get my Fleetguard Strats. Seems like the prepaid sample kit is 9 or 10 dollars. They take about 10 days to turn around an analysis.

 

Here is a link to the last guys that analyzed my oil.<br>http://www.oaitesting.com/<br>I just got 16K out of my oil and filter. The analysis came back OK.<br><br><br>Chris