Six, one hundred eighty horsepower aircraft piston engines have been operated through their normal overhaul life using three different ashless dispersant multi-viscosity aircraft oils. Two of these oils achieved their multi-viscosity characteristics by utilizing some synthetic base stock while the third utilized additional viscosity-index (V-I) improver. The performance of these three oils was compared with that of a conventional, single-grade AD oil in six identical control aircraft engines. The results of this test indicates that multi-viscosity oils provide improved cold-weather starting, less consumption, and comparable wear rates to the six control engines.
Final Evaluation of Multi-Viscosity Oils Designed for Aircraft Reciprocating Engines
Sae Technical Papers
Business Aircraft Meeting and Exposition ; 1983
1983-02-01
Conference paper
English
Final evaluation of multi-viscosity oils designed for aircraft reciprocating engines
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