1943-01-01

THE INFLUENCE of LUBRICATING OIL VISCOSITY on CYLINDER WEAR 430134

RESULTS of tests to determine the influence on ring and cylinder wear of one single property of lubricating oil, namely viscosity, are reported by the author.
Prof. Everett measures the amount of iron wear in the cylinders by evaluating the iron contamination of the crankcase oil used, adjusted to allow for the oil that has been lost by consumption, leakage, and samples.
The results of Prof. Everett's tests show clearly that cylinder and ring wear, and incidentally oil consumption, in well-lubricated engines decreases progressively with increasing viscosity throughout the range tested, the wear being almost inversely proportional to the kinematic viscosity.

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