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Aircraft Engine Oil

Aviation Oil Specifications, I

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 lubricating 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 AVgas and Jet fuel to piston and turbine engine oils specially formulated for Aero engines.

On these pages we discuss the most common types from single grades like W65 to multigrades as 15W50.

AeroShell Oil W100 Plus

The Premium Single Grade Aviation Oil

AeroShell Oil W100 Plus is a new single grade oil that combines proven AeroShell ashless dispersant technology with advanced antiwear additives. It is the oil for pilots who want a single grade that delivers extra protection and performance. AeroShell Oil W100 Plus brings together the best qualities of two of the world's bestselling four cycle aviation oils.

It has the single grade, ashless dispersant performance found in AeroShell W100 and the antiwear/anticorrosion additives of AeroShell Oil W 15 - W50 Multigrade. It's single grade heritage means outstanding resistance to heat. Its ashless dispersant formulation reduces deposits of harmful metallic ash in combustion chambers. And its advanced additives work against rust, corrosion and wear in a way no other single grade does. There simply is no better single grade aviation oil.

Summary of Benefits:

Superior Rust and corrosion protection giving that extra protection to engine parts that may be susceptible to extreme rusting when an aircraft is not in use (for prolonged periods of non use please use AeroShell Fluid 2F).

Improved antiwear characteristics particularly at engine startup and eliminates the need for supplemental additives required by certain Lycoming engines. AeroShell Oil W100 Plus already contains the Lycoming additive LW 16702 in the correct proportions and meets Lycoming requirements as well as the US Federal Aviation Authority Airworthiness directive 80-04-03. Promotes Engine Cleanness.

The non-ash forming, polymeric additive was developed to eliminate the harmful combustion chamber and spark plug deposits that form during normal operation. High Viscosity Index Base Oils used in AeroShell W oils 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. Mixing with other products, however will result in some loss of the superior performance features of AeroShell Oil W100 Plus.

More info in this AeroShell Piston Engine Oil document.

Specifications and Approvals:

AeroShell W100 Plus

Lycoming Service Bulletin 446C and 471, plus Service Instruction 1409A.

  • MIL-L-22851(obsolete)
  • SAE J 1899
  • SAE Grade 50
  • Continental recommended
  • FAA Airworthiness Directive 80-04-03 / Lycoming Additive LW 16702

AeroShell Oil W100 Plus is the only single grade blended with this antiwear additive technology. That means that owners of Lycoming model engines, specified in the applicable service bulletin, don't have to add any supplemental additives to the oil.

This oil can be used in any certified engine, this includes: Lycoming; Continental; Pratt & Whitney radial and most other radial, opposed or inline engines.

It is not recommended for use in helicopters with a common sump for the engine and transmission. The antiwear additives makes the oil more slippery than regular single grades. This can cause the transmission to slip. This product is also not recommended for the breaking in of a new engine for the same reason.

Written by EAI.

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