AeroShell Oil W120 SAE 60 Piston Engine Oil
AeroShell Oil W120 is a single-grade, mineral ashless dispersant oil developed for four-stroke certified reciprocating aircraft piston engines. It is suitable for fuel-injected and turbocharged engines where an SAE J1899 Grade 60 oil is specified.
Its non-metallic additive system provides dispersancy, oxidation stability, anti-foaming performance, and protection against scuffing and wear. The ashless dispersant formulation promotes engine cleanliness by helping keep sludge and suspended contaminants from accumulating in critical engine areas.
AeroShell Oil W120 is intended primarily for warmer climates above approximately 26°C (78.8°F). Its higher viscosity makes it particularly applicable to radial aircraft engines during warm-weather operation.
Key Features
- Single-grade SAE 60 aviation piston-engine oil
- Mineral ashless dispersant formulation
- Meets SAE J1899 Grade 60
- Promotes engine cleanliness
- Helps keep engines sludge-free
- Helps reduce oil consumption
- Provides anti-foaming performance
- Supports protection against scuffing and wear
- Helps engines reach TBO
- Non-metallic additive system leaves no metallic ash residue
Recommended Applications
AeroShell Oil W120 is intended for:
- Four-stroke certified reciprocating aircraft piston engines
- Fuel-injected aircraft piston engines
- Turbocharged aircraft piston engines
- Aircraft radial engines
- Radial-engine warm-weather operation
- Approved aircraft piston engines operating in warmer ambient temperatures
Specifications, Approvals, and Recommendations
- SAE J1899 Grade 60
- SAE J1899 (replaces former MIL-L-22851D)
- Joint Service Designation OMD-370
- NATO Code O-128 (obsolete)
- Textron Lycoming 301F
- Lycoming Service Instruction No. 1014 N
- Continental MHS 24B
- Pratt & Whitney Service Bulletin 1183
- Curtiss Wright, various service bulletins
- Franklin Engines, various service bulletins
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 |
60 |
| Density at 15°C |
ASTM D4052 |
891 kg/m³ |
| API gravity |
ASTM D287 |
27.2 |
| Kinematic viscosity at 40°C |
ASTM D445 |
306 mm²/s |
| Kinematic viscosity at 100°C |
ASTM D445 |
23.8 mm²/s |
| Viscosity index |
ASTM D2270 |
Greater than 96 |
| Pour point |
ASTM D5949 |
Less than -21°C |
| Flash point |
ASTM D92 |
Greater than 260°C |
| Total acid number |
ASTM D664/974 |
Less than 0.5 mgKOH/g |
| Sulfur |
ASTM D4951 |
0.51% mass |
| Copper corrosion after 3 hours at 100°C |
ASTM D130 |
1a |
| Ash content |
ASTM D482 |
Less than 0.004% mass |
| Trace sediment |
ASTM D2273 |
Passes |
| Foaming tendency |
ASTM D892 |
Passes |
| Trace metal content |
ASTM D4951 |
Passes |
Frequently Asked Questions
What is AeroShell Oil W120 used for?
AeroShell Oil W120 is used in four-stroke certified reciprocating aircraft piston engines, including fuel-injected and turbocharged engines, where an SAE J1899 Grade 60 ashless dispersant oil is specified. It is commonly associated with radial-engine operation in warmer climates.
Is AeroShell Oil W120 an ashless dispersant oil or a straight mineral oil?
AeroShell Oil W120 is a mineral-based ashless dispersant oil. It contains non-metallic dispersant additives and should not be confused with AeroShell Oil 120, which is a straight mineral SAE 60 oil intended primarily for engine break-in.
Can AeroShell Oil W120 be used during engine break-in?
Break-in recommendations vary by engine manufacturer and overhaul facility. Some permit either ashless dispersant or straight mineral oil, while others specify straight mineral oil.
What is the difference between AeroShell Oil W80, W100, and W120?
The primary differences are viscosity grade and intended ambient conditions:
- AeroShell Oil W80 is SAE 40 and is intended for colder climates from approximately -17°C to 21°C.
- AeroShell Oil W100 is SAE 50 and is intended for moderate climates from approximately 16°C to 32°C.
- AeroShell Oil W120 is SAE 60 and is intended for warmer climates above approximately 26°C.
All three are single-grade mineral ashless dispersant oils intended for normal aircraft piston-engine service.
What is the difference between AeroShell Oil W120 and AeroShell Oil 120?
Both products are single-grade SAE 60 oils intended for warmer climates, but they serve different purposes. AeroShell Oil W120 is an ashless dispersant oil intended for normal engine service where SAE J1899 Grade 60 is specified. AeroShell Oil 120 is a straight mineral, non-dispersant oil intended primarily for engine break-in where SAE J1966 Grade 60 is required.
What AeroShell Oil W120 package size does Petroleum Service Company offer?
Petroleum Service Company offers AeroShell Oil W120 in the following package configuration:
- Case of three 5-liter bottles (SKU: 550045828)
