Lubricating oil W120

piston engine

Product summary
AeroShell Oil W120 is a single-grade, ashless dispersant piston engine oil formulated for use in four‑stroke certified reciprocating aircraft engines operating in warm ambient conditions. It provides stable viscosity at elevated temperatures to maintain lubrication and minimize deposit formation.

Features and benefits

• High stability under heat — Single-grade viscosity designed to deliver consistent lubrication in warmer climates (typical reference: ambient air above 26°C / 78.8°F).
• Ashless dispersant technology — Formulated to keep combustion by-products in suspension and reduce deposit build-up for cleaner running engines and reliable operation.

Specifications & approvals

• SAE — J1899 Grade 60
• Joint Service Designation — OMD-370
• Lycoming Engines — Service Instruction No. 1014 N
• Continental Aerospace Technologies — MHS-24
• Pratt & Whitney — Service Bulletin 1183

Applications
AeroShell W series oils are available in multiple viscosity grades; the suffix indicates Saybolt Universal Seconds at 210°F. These oils are intended for four‑stroke certified reciprocating piston engines, including fuel‑injected and turbocharged types. AeroShell Oil W120 is commonly selected for radial and other engines operating in warm climates. For cooler ambient conditions, operators may select AeroShell Oil W100 or AeroShell Oil W 15W-50 according to engine manufacturer guidance. Recommendations for break‑in oils vary by engine model and overhaul agency and may allow either ashless dispersant or straight mineral oils depending on application.

Health, Safety and Environment

• Collect and dispose of used lubricant at an authorised collection point.
• Do not discharge oil or waste lubricant to drains, soil or watercourses.

Additional information
Refer to AeroShell technical literature for guidance on approved piston engine oils, lead fouling management and oil analysis. Recommended oils can vary with engine type, operating profile and manufacturer service instructions.

Typical physical characteristics
These characteristics are typical of current production; while future production will meet Shell's specification, measured values may vary.

Technical characteristics

• Product type: Single-grade ashless dispersant piston engine oil
• Suitable climate: Warm climates (ambient air above 26°C / 78.8°F)
• SAE specification: J1899 Grade 60
• Joint Service Designation: OMD-370
• Lycoming Engines: Service Instruction No. 1014 N
• Continental Aerospace Technologies: MHS-24
• Pratt & Whitney: Service Bulletin 1183