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Aircraft Engine Oil

Aviation Oil Specifications, IV

With the correct oil friction losses in an engine are reduced to a minimum. This is done by taking into consideration circumstances as engine usage, ambient temperature, time of year and climate, location and engine design. The engine manufacturer usually recommends a certain type of oil to use with regard to different circumstances.

Lubricating oil plays an important part in the life of the engine and during maintenance it will be replaced, on certified aircraft the pilot can only replenish it. Without it the engine would fail within minutes, keeping a watchful eye during flight is therefore important.

Having a basic understanding of engine oil is a must for the professional and private pilot, here we can only scratch on the surface of a very interesting subject.

AeroShell supplies the aviation sector with a number of products, ranging from fuel to piston and turbine engine oil. On these pages we discuss the most common types.

AeroShell Oil Multigrade 15W50

Semi-synthetic Ashless Dispersant Engine Oil.

Aeroshell Oil W 15 W 50 is a premium semi-synthetic multigrade ashless dispersant oil specifically developed for aviation piston engines. It is a special blend of a high quality mineral oil and synthetic hydrocarbons with an advanced additive package that has been specifically formulated for multigrade applications.

The combination of nonmetallic antiwear additives and selected high viscosity index mineral and synthetic base oils, give exceptional stability, dispersancy and antifoaming performance. The advanced additive package in AeroShell W 15 W 50 provides excellent protection to engines operating at extreme ambient temperatures. The ashless antiwear additive package provides exceptional wear protection for camshafts and lifters and other wearing surfaces.

AeroShell W 15 W 50 has become very popular amongst engine manufacturers and operators alike. In order to cater for those Lycoming engines that need improved load carrying, the Lycoming LW 16702 antiwear additive has been incorporated into the formulation thus eliminating the need for supplemental additive addition.

Product Benefits:

  • Promotes Engine Cleanness. The non-ash forming, polymeric additive was developed to eliminate the harmful combustion chamber deposits that occur during normal operation.
  • Multigrade Performance allows for improved engine operation in temperature extremes.
  • Excellent Low Temperature characteristics provide easier cold weather starting and rapid lubrication of engine parts.
  • Reduces Oil Consumption in some cases by up to 50% and resists thickening at low temperatures.
  • Protects against oil cooler plugging.
AeroShell 15W50

All Season oil function since there is no need to change from a winter / summer grade depending on the ambient temperatures.

High Viscosity Index Semisynthetic Base Oils used, maintain their viscosity and protect engine components more effectively under the high shear stresses that an engine places on lubricants. Provides Compatibility with other approved aircraft piston engine oils.

Since AeroShell Oil W 15W-50 is fully approved to SAE J-1899 and is listed on the relevant Qualified Products List (QPL), elaborate precautions are not needed when changing from similarly approved aircraft engine oils, as long as these oils are qualified products.

Reduces Fuel Consumption by up to 5% over straight grade engine oils.

Specifications and Approvals:

  • AVCO Lycoming 301F (Service Bulletin 1014J and revisions, 446C & 471)
  • Teledyne Continental MHS-24B (Service Bulletin M81-11 and revisions)
  • Pratt & Whitney All radial engines (Service Bulletin 1183 revision R)
  • FAA Airworthiness Directive 80-04-03

AeroShell Oil W 15W-50 already contains, in the correct proportions, an antiwear additive equivalent to the Lycoming additive LW 16702; operators who use AeroShell Oil W 15W-50 DO NOT need to add this Lycoming additive to the oil. AeroShell Oil W 15W-50 is qualified for use in all Teledyne Continental Motors liquid cooled and air cooled aircraft piston engines.

More info in this AeroShell Piston Engine Oil document.

Health and Safety

AeroShell W 15W-50 is unlikely to present any significant health or safety hazard when properly used in the recommended application, and good standards of industrial and personal hygiene are maintained.

Written by EAI.

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