Processed the disel fuel source and "after the filter" today and the results were not good. The "after the filter" results showed double the amount of abrasive particulates compared with the pump fuel that went into the truck's tank! We either had a defective fuel filter or possibly a mis-seated filter. The fuel filter had a little over 8,000 miles on it and the fuel the truck has used is among the cleanest there is. A new fuel filter was installed this afternoon. The old filter was examined carefully and there were no readily apparent imperfections discernable.
The Duramax will be driven for the weekend and then re-sampled early next week. We will post the results here for all to see..
Continued.......
George Morrison, STLE CLS