Precision Auto Diagnostics, Inc. As we've mentioned before, this truck had been purchased 200 miles prior to our inspection, and many would love to own it. We have replaced the dealer's license plate with the "wild card" to emphasize the point that it could have been virtually any plate. As you can see even if you are not a technician, the engine has severe non-repairable damage... ...caused by sludge accumulation resulted from lack of maintenance.