AeroShell Oil W 15W-50

Standards & approvals

• SAE J1899

  Aircraft piston engine oil, ashless dispersant type

  SAE standard for mineral aircraft piston engine oils with ashless dispersants.

• NATO Code O-162

  NATO Code O-162 (obsolete) — aviation piston-engine oil

  NATO code for an aviation piston-engine oil (obsolete).

• Pratt & Whitney : Service Bulletin 1183-S

  Pratt & Whitney Service Bulletin 1183-S

  The Pratt & Whitney service bulletin listing the oils approved for its own gas turbines.

• MHS-24A

  Continental MHS-24A — piston aircraft engine oil specification

  The Continental Motors specification for oils used in Continental piston aircraft engines.

Specifications

Brand

Shell

Range

AeroShell

Category

Aviation piston engine oils

Viscosity

SAE 15W-50

Manufacturer code

001A9612

Availability

On request

Manufacturer's description

AeroShell Oil W 15W-50 is a unique blend of high-quality mineral oil and over 50% synthetic base oils, plus the AeroShell Oil W ashless dispersant additive system. This semi-synthetic blend delivers high performance across a wide variety of applications and conditions. The high-performance synthetic base oils provide better low-temperature pumping and protection than single grade oils. In addition, the blend of high-quality synthetic and mineral oils delivers high-temperature performance superior to that of many aircraft piston engine oils. The mineral oils help disperse combustion by-products, thereby keeping engines free of "grey paint" or lead sludge, which can be a problem with some fully synthetic oils. The anti-wear additive system in AeroShell Oil W 15W-50 provides outstanding wear protection for camshafts, lifters and other high-wear components. The anti-corrosion additive package in AeroShell Oil W 15W-50 helps protect low-usage engines and engines in high-humidity climates against rust and corrosion of critical engine areas, such as camshafts and lifters. AeroShell Oil W 15W-50 provides superior anti-corrosion protection for all types of certified aircraft piston engine. When used with proper maintenance procedures, the product provides maximum protection and improves the likelihood that aircraft engines will reach TBO (time between overhauls). In addition, this product provides outstanding high-temperature oxidation protection for hot-running engines. It is designed to keep engines cleaner, with less sludge and varnish in the critical ring belt and other areas.

Applications

• AeroShell Oil W 15W-50 is intended for use in four-stroke aircraft piston engines. AeroShell Oil W 15W-50 is superior to single grade oil in almost every application.
• It offers easier starting, better lubrication after start-up, reduced wear, corrosion and rusting, and improved engine cleanliness. In small aircraft, the oil temperature may be reduced slightly. Operators should always check the oil temperature to ensure that it is within the range specified by the manufacturer. Most manufacturers recommend oil temperatures between 82 and 93 0 C (180-200 0 F). Oil temperatures significantly below this range can lead to excess water and fuel contamination in the crankcase. While future production will conform to Shell's specifications,

Performance & benefits

• Provides excellent rust and corrosion protection for aircraft engines.
• Promotes engine cleanliness and delivers excellent anti-wear and anti-foam properties.
• Helps reduce oil consumption by up to 50% and provides superior oil flow at low temperatures.
• Compatible with other approved aircraft piston engine oils.
• Reduces fuel consumption by up to 5% compared with monograde oils.
• Provides superior oxidation stability at high temperatures.
• AeroShell Oil W 15W-50 is not recommended for use in automotive engines. For automotive engines converted for aircraft use, for the appropriate oil recommendations you should
• oil pressure and temperature equal to those of single grade SAE 50 oils under the same warmed-up conditions. The anti-corrosion additive system is designed to prevent rust or corrosion in all types of aircraft piston engine. In comparative testing of camshaft rusting under high humidity conditions, AeroShell Oil W 15W-50 was almost entirely rust free, while camshafts conditioned on other oils sometimes showed rust on the cam lobes and bearing surfaces.
• These results indicate that AeroShell Oil W 15W-50 can provide maximum anti-corrosion protection for aircraft piston engines when combined with proper maintenance practices and operating conditions.
• Because of the distinctive flow characteristics of AeroShell Oil W 15W-50, operators may observe slightly lower oil temperatures in some aircraft. On larger aircraft, the oil cooler flap will normally compensate for this change. However, in
• consult the engine manufacturer or the conversion agency.
• Functions as an all-season oil
• The anti-corrosion additive system is designed to prevent rust or corrosion in all types of aircraft piston engine. In comparative testing of camshaft rusting under high humidity conditions, AeroShell Oil W 15W-50 was almost entirely rust free, while camshafts conditioned on other oils sometimes showed rust on the cam lobes and bearing surfaces
• AeroShell Oil W 15W-50 was developed in collaboration with Textron Lycoming and Continental Motors and conforms to their specifications 301F and MHS-24A respectively. This oil is also approved under military specification MIL-L-22851, which is obsolete and has been replaced by the SAE J-1899 specification. AeroShell Oil W 15W-50 is also approved for use in all Pratt & Whitney radial aircraft engines. In addition, AeroShell Oil W 15W-50 meets the provisions of Lycoming Service Bulletin 446C and 471, plus Service Instruction 1409A, and meets American FAA Airworthiness Directive 80-04-03, which specifies special anti-wear requirements for certain engine models
• AeroShell Oil W 15W-50 already contains, in the correct proportions, an anti-wear 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