Engine Parts after 409,000 Miles on ONE Oil Change


The pins show no wear at all. The piston crowns and lands show a normal amount of carbon. The skirts are very clean with a few fine vertical lines.” – Independent engine rater	“The rings are very, very good. All the rings are free. None are broken. No plugging whatsoever in the oil rings.” – Independent engine rater

“Probably 95 percent of the crosshatching is still in the liners. No scuffing, no cavitation in the liners. The liners could go back in the condition they’re in.” – Independent engine rater	Again, very, very light wear. These could be put right back in and used again. In an extended drain program with petroleum oil there's a possibility you could see maybe half again as much wear." -Independent engine rater

"Light wear. They compare to those in an engine that had 15,000 to 20,000 mile petroleum oil and filter changes." -Independent engine rater	"Minimal wear. These compare to those in an engine that had 15,000 to 20,000 mile petroleum oil and filter changes." -Independent engine rater

Haywood Gray has his used oil tested regularly to ensure the ongoing serviceability of the oil and well-being of the engine. In the engine oil report card, wear metals tell the whole story. A high wear metal content indicates a high rate of engine wear. In fact, most engine manufacturers publish upper limits on wear metals content at which an oil must be changed to assure continued engine protection. Even after 409,000 miles, AMSOIL protected better than Mack limits required. Now that’s protection!

What Is Oil Analysis?
Oil analysis is a maintenance management tool that allows users to monitor equipment condition for maximum equipment life, maximum lubricant drain interval length and optimal downtime scheduling. Oil analysis saves users significant money by reducing equipment replacements and repairs, reducing the volume of lubricant purchased and destined for disposal and, most of all, by reducing downtime.

Oil analysis customers like Haywood Gray “trendline” their oil analyses. Trendlining involves comparing the results of previous oil analysis reports to those of the most recent report to establish trends in wear metals content, viscosity, acid content, acid neutralization ability and other characteristics as specified. Departures from established trends indicate a change in engine or lubricant condition and the information they provide may be used to correct abnormal conditions before they cause damage or failure.