AeroShell Oil W100 Plus SAE 50 Piston Engine Oil
AeroShell Oil W100 Plus is a single-grade SAE 50 mineral ashless dispersant oil developed for certified four-stroke aircraft piston engines. It combines the ashless dispersant performance of AeroShell Oil W100 with additional anti-wear and anti-corrosion additives similar to those used in AeroShell Oil W 15W-50.
The formulation contains anti-wear additive technology equivalent to Lycoming LW 16702 in the correct proportions. This provides additional protection for critical engine components such as camshafts and lifters without requiring supplemental LW 16702 to be added separately.
AeroShell Oil W100 Plus is intended primarily for moderate ambient temperatures from approximately 16°C to 32°C (60.8°F to 89.6°F). Its additive package is particularly useful for helping protect engines against rust and wear when aircraft are operated infrequently or remain idle between flights.
Key Features
- Single-grade SAE 50 aviation piston-engine oil
- Mineral ashless dispersant formulation
- Meets SAE J1899 Grade 50
- Intended for moderate ambient temperatures
- Contains anti-wear technology equivalent to Lycoming LW 16702
- Supports camshaft and lifter wear protection
- Provides additional rust and corrosion protection
- Helps protect engines during periods of inactivity
- Promotes engine cleanliness
- Helps keep contaminants and deposits dispersed
- Supports load-carrying performance
- Offers longer engine life
- Compatible with other approved aircraft piston-engine oils
Recommended Applications
AeroShell Oil W100 Plus is intended for:
- Certified four-stroke aircraft reciprocating piston engines
- Fuel-injected aircraft piston engines
- Turbocharged aircraft piston engines
- Continental air-cooled and liquid-cooled aircraft piston engines
- Radial aircraft engines where an SAE 50 oil is applicable
- Aircraft operating in moderate ambient temperatures
- Lower-use or seasonally operated aircraft requiring additional corrosion protection
Specifications, Approvals, and Recommendations
- SAE J1899 Grade 50
- FAA AMOC to Airworthiness Directive 80-04-03 R2 p.1b
- Textron Lycoming 301F
- Lycoming Service Bulletin 446E and 471B
- Lycoming Service Instruction 1409C
- Continental MHS-24
- Continental SIL 99-2
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 |
50 |
| Density at 15°C |
ASTM D4052 |
891 kg/m³ |
| API gravity |
ASTM D287 |
17.1 |
| Kinematic viscosity at 40°C |
ASTM D445 |
212 mm²/s |
| Kinematic viscosity at 100°C |
ASTM D445 |
18.6 mm²/s |
| Viscosity index |
ASTM D2270 |
Greater than 96 |
| Pour point |
ASTM D5949 |
Less than -21°C |
| Flash point |
ASTM D92 |
Greater than 255°C |
| Total acid number |
ASTM D664/974 |
Less than 0.6 mgKOH/g |
| Sulfur |
ASTM D4951 |
0.35% mass |
| Copper corrosion after 3 hours at 100°C |
ASTM D130 |
1a |
| Ash content |
ASTM D482 |
Less than 0.008% mass |
| Trace sediment |
ASTM D2273 |
Passes |
| Foaming tendency |
ASTM D892 |
Passes |
| Trace-metal content |
ASTM D4951 |
Passes |
Frequently Asked Questions
What is AeroShell Oil W100 Plus used for?
AeroShell Oil W100 Plus is used in certified four-stroke aircraft piston engines where an SAE J1899 Grade 50 ashless dispersant oil is specified. Applications include approved fuel-injected, turbocharged, Lycoming, Continental, opposed, and radial aircraft piston engines.
Is AeroShell Oil W100 Plus an ashless dispersant or straight mineral break-in oil?
AeroShell Oil W100 Plus is a mineral-based ashless dispersant oil intended for normal engine service. It should not be confused with AeroShell Oil 100, which is an SAE 50 straight mineral oil intended primarily for engine break-in.
What is the difference between AeroShell Oil W100 and W100 Plus?
Both are single-grade SAE 50 mineral ashless dispersant oils. AeroShell Oil W100 Plus contains additional anti-wear and anti-corrosion additives, including technology equivalent to Lycoming LW 16702. Standard AeroShell Oil W100 does not contain the same Plus additive system.
What temperature range is AeroShell Oil W100 Plus intended for?
AeroShell Oil W100 Plus performs best in moderate ambient temperatures from approximately 16°C to 32°C, or 60.8°F to 89.6°F. Operators experiencing broader seasonal temperature changes may consider an approved multigrade oil such as AeroShell Oil W 15W-50.
Does AeroShell Oil W100 Plus contain Lycoming LW 16702?
AeroShell Oil W100 Plus contains anti-wear additive technology equivalent to Lycoming LW 16702 in the correct proportions. Operators using W100 Plus do not need to add supplemental LW 16702 to the oil.
Is AeroShell Oil W100 Plus suitable for aircraft that do not fly frequently?
Its additional anti-corrosion additives are intended to help protect critical engine surfaces against rust and wear, particularly when an aircraft sits idle between flights. For extended storage, follow the applicable engine-preservation procedures rather than relying on normal service oil alone.
Is AeroShell Oil W100 Plus compatible with other aviation piston-engine oils?
AeroShell Oil W100 Plus is compatible with other approved aircraft piston-engine oils. Mixing it with another oil may dilute the additional anti-wear and corrosion-protection benefits of the Plus additive system.
Can AeroShell Oil W100 Plus be used during engine break-in?
AeroShell Oil W100 Plus is not intended to be used as a universal break-in oil. Break-in requirements vary by engine manufacturer, cylinder type, and overhaul facility.
What AeroShell Oil W100 Plus package sizes does Petroleum Service Company offer?
Petroleum Service Company offers AeroShell Oil W100 Plus in the following package configurations:
- 6/1-quart case (SKU: 550050837)
- 55-gallon drum (SKU: 550041185)
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