544,000 MILES WITH KLEENOIL FILTRATION TECHNOLOGY AND VIRTUALLY NO WEAR
CHANGING OIL UP TO 100,000 MILE INTERVALS
The soft tin/lead-bearing overlay is intact, giving full protection to the bearing. There is no evidence of any particle, or acid abrasion.
This is a Mack® E7 engine owned by Eddie and Patricia Peschko.
283,000 MILES NORMAL USEAGE AND MAINTENANCE SHOWING TOTAL OVERLAY FAILURE THROUGH TO THE COPPER CORE
CHANGING AT 10,000 MILE INTERVALS
The protective beaing overlay is destroyed and the copper is aleady well worn, showing signs of particle and acid abrasion.
Similar size engine owned by a local County Road Commission in Tennessee.