1953-01-01

HOW ENGINES WEAR 530224

RESULTS of both laboratory and field tests to determine causes of engine wear are presented in this paper. Among 100 passenger cars brought in for engine overhaul 57% showed excessive engine wear, were relatively free from heavy deposits, and indicated no mechanical failures.
Laboratory examination of the worn rings showed that in 90% of the cases the wear resulted from either friction or abrasion, or a combination of the two. What appeared to be low-temperature corrosive wear was observed in only 10% of the engines.
The field tests were completed with findings on the use of three different types of oil.

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