AeroShell Oil W 15W-50 Piston Engine Oil
AeroShell Oil W 15W-50 is a semisynthetic, multigrade ashless dispersant lubricating oil developed for certified four-stroke aircraft piston engines. It combines high-quality mineral oil with synthetic hydrocarbon base stocks and an advanced non-metallic additive system for year-round operation across a broad range of ambient temperatures.
AeroShell Oil W 15W-50 contains anti-wear technology equivalent to Lycoming LW 16702, along with additives that support rust protection, corrosion resistance, oxidation stability, anti-foaming performance, and engine cleanliness. The mineral portion of the formulation also helps disperse lead combustion by-products that may accumulate when leaded aviation fuel is used.
AeroShell Oil W 15W-50’s anti-corrosion additive helps protect low usage engines and engines in high humidity climates against corrosives. In addition, AeroShell Oil W 15W-50 provides high temperature oxidation protection for hot running engines. Furthermore, its synthetic base stock provides better cold temperature pumping and protection than single grade oils.
Key Features
- Semisynthetic SAE 15W-50 aviation piston-engine oil
- Multigrade ashless dispersant formulation
- Designed for year-round operation
- Provides cold-temperature pumping and startup lubrication
- Maintains viscosity under mechanical stress
- Supports high-temperature oxidation stability
- Contains anti-wear technology equivalent to Lycoming LW 16702
- Protects critical components such as camshafts and lifters against wear
- Supports rust and corrosion protection
- Promotes engine cleanliness
- Helps control sludge and varnish deposits
- Provides anti-foaming performance
- Helps reduce oil consumption by up to 50%
- Compatible with other approved aircraft piston-engine oils
Recommended Applications
AeroShell Oil W 15W-50 is intended for:
- Certified four-stroke aircraft reciprocating piston engines
- Fuel-injected aircraft piston engines
- Turbocharged aircraft piston engines
- Lycoming opposed aircraft engines
- Continental air-cooled aircraft piston engines
- Continental liquid-cooled aircraft piston engines
- Pratt & Whitney radial aircraft engines
- Aircraft operated across broad seasonal temperature changes
- Applications requiring an SAE J1899 multigrade ashless dispersant oil
Specifications, Approvals, and Recommendations
- SAE J1899 Grade Multigrade
- FAA AMOC to Airworthiness Directive 80-04-03 R2 p.1b
- DCSEA 262/A (XO-162)
- Joint Service Designation OMD-162
- NATO Code O-162 (obsolete)
- Textron Lycoming 301F
- Lycoming Service Bulletin 446E and 471B
- Lycoming Service Instruction 1409C
- Continental MHS-24
- Continental SIL 99-2
- Pratt & Whitney Service Bulletin 1183
Typical Technical Characteristics
The following values are typical of current production and should not be treated as product specifications.
| Property |
Test Method |
Typical Value |
| SAE viscosity grade |
Not specified |
15W-50 |
| Density at 15°C |
ASTM D4052 |
857 kg/m³ |
| API gravity |
ASTM D287 |
33.4 |
| Kinematic viscosity at 40°C |
ASTM D445 |
137 mm²/s |
| Kinematic viscosity at 100°C |
ASTM D445 |
18.2 mm²/s |
| Viscosity index |
ASTM D2270 |
148 |
| Dynamic viscosity at -20°C |
ASTM D5293 |
5,561 mPa·s |
| Pour point |
ASTM D5949 |
-36°C |
| Flash point |
ASTM D92 |
Greater than 240°C |
| Total acid number |
ASTM D664/974 |
Less than 0.1 mgKOH/g |
| Sulfur |
ASTM D4951 |
0.2% mass |
| Copper corrosion after 3 hours at 100°C |
ASTM D130 |
1a |
| Ash content |
ASTM D482 |
Less than 0.006% mass |
| Trace sediment |
ASTM D2273 |
Passes |
| Foaming tendency |
ASTM D892 |
Passes |
| Trace metal content |
ASTM D4951 |
Passes |
Frequently Asked Questions
What is AeroShell Oil W 15W-50 used for?
AeroShell Oil W 15W-50 is used in certified four-stroke aircraft piston engines, including fuel-injected, turbocharged, opposed, radial, air-cooled, and liquid-cooled applications where an SAE J1899 multigrade ashless dispersant oil is permitted.
Is AeroShell Oil W 15W-50 fully synthetic or semisynthetic?
AeroShell Oil W 15W-50 is semisynthetic. It combines high-quality mineral oil with synthetic hydrocarbon base stocks and an ashless dispersant additive system.
Why choose a multigrade oil over a single-grade aviation oil?
A multigrade oil provides lower-temperature flow for easier pumping and faster lubrication after startup while maintaining suitable viscosity after the engine reaches normal operating temperature. It can reduce the need to change between seasonal single-grade oils.
What temperature ranges does AeroShell Oil W 15W-50 operate in?
AeroShell Oil W 15W-50 is a multigrade oil designed for aircraft operated across a broad range of seasonal and ambient temperatures. Its 15W viscosity supports oil flow and pumping during colder starts, while the SAE 50 high-temperature grade maintains suitable viscosity after the engine reaches normal operating temperature. This can reduce the need to switch between separate winter and summer single-grade oils.
Is AeroShell Oil W 15W-50 compatible with other aviation piston-engine oils?
AeroShell Oil W 15W-50 is compatible with other approved aircraft piston-engine oils. Product changes and top-offs should still follow the applicable engine and maintenance requirements.
Can AeroShell Oil W 15W-50 be used during engine break-in?
AeroShell Oil W 15W-50 should not automatically be selected as a break-in oil. Break-in requirements vary by engine manufacturer, cylinder type, and overhaul facility.
What AeroShell Oil W 15W-50 package sizes does Petroleum Service Company offer?
Petroleum Service Company offers AeroShell Oil W 15W-50 in the following package configurations:
- 6/1-quart case (SKU: 550050835)
- 55-gallon drum (SKU: 550050888)
Product Videos
