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Present Day Lubricants for Utility Aircraft Engines
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English
Abstract
At the present time, there are four basic kinds of oils available for utility aircraft piston engines; two of these can be considered major types and two minor, but of considerable interest. These are: nonadditive straight mineral oil; ashless dispersant mineral oils; metallic additive detergent mineral oils; synthetic oils.
This paper discusses the merits of each of these major types of oil and compares their relative advantages in several categories. The paper also develops some of the reasons why the ashless dispersant mineral oils have made such gains in usage since introduced to the market in 1958.
There is also a discussion and clarification of the terms “dispersant” and “detergent” as applied to additive oils.
Authors
Citation
Poitz, H., "Present Day Lubricants for Utility Aircraft Engines," SAE Technical Paper 670248, 1967, https://doi.org/10.4271/670248.Also In
References
- MaloneB. W., PoitzH. A., and RyanJ. G., “A New Approach to Crankcase Oils.” Paper presented at SAE Section Meeting, Chicago, March 1959.
- Military Spec MIL-L-22851, “Lubricating Oil, Air craft Reciprocating Engine,” (Ashless Dispersant) June 30, 1961.
- Pratt & Whitney Service Bulletin 1183, Revision G, March 15, 1962.
- Lycoming Div. Lubrication Spec No. 301E, originally issued March 4, 1959.
- Continental Motors Corp. Spec MHS-24, originally issued Nov. 29, 1957.
- ShearerR. S., “Additional Design Performance and Growth Potential Through the Use of a Synthetic Lubricant.” Paper presented at SAE Business Aircraft Conference, Wichita, May 6-8, 1965.
- HundereA., “Preignition from Combustion Chamber Deposits,” CRC Symposium on Aviation Reciprocating Engines and Their Fuels, Sept. 10, 1948. Condensed in “Auto motive Industries” Sept. 1, 1950.
- Lycoming Service Bulletin No. 289, Sept. 7, 1962.
- Continental Motors Corp. Service Bulletin M61-3, June 15, 1961, superseded by Service Bulletin M63-5, June 5, 1963.
- Lycoming Service Instruction No. 1014B, Dec. 28, 1962.
- Lycoming Service Letter No. L147A, Dec. 4, 1964, and Lehigh Chemical Co. Technical Form 553 (11282), Instructions for Flushing Engines Prior to Use of Anderol Synthetic Aviation Oil.