Sinclair Natural Gas Engine Oil

Heavy Duty Engine Oil

Reduce Friction, Reduce Wear, Increase Productivity

Today, OEMs are evolving their engine designs, and the conditions in which those engines are operating are becoming increasingly severe. That calls for engine oils that have evolved as well and are able to rise to the occasions where a balance of protection, toughness and endurance are mandatory. Oils like Sinclair Natural Gas Engine Oil.

Sinclair Natural Gas Engine Oils: Performance You'll Notice

Sinclair protection gives you a tough shield that reduces friction and wear, so your equipment stays on the job, getting the job done.

Sinclair Natural Gas Engine Oils are Designed to Give You:


Outstanding performance to protect engines.


Excellent wear protection.


Outstanding deposit and oxidation control.

Typical Properties

Viscosity Grade Natural Gas SAE 40
Color ASTM D1500 2
Flash Point °C ASTM D92 220
Flash Point °F ASTM D92 428
Gravity, °API ASTM D287 29.85
Phosphorus, wt. % ASTM D5185 0.025
Pour Point °C (°F) ASTM D5950 -27°C (-17°F)
Specific Gravity @ 60°F (15.6°C) ASTM D4052 0.877
Sulfated Ash, wt. % ASTM D874 0.46
TBN, mgKOH/g ASTM D2896 5.7
Viscosity @ 100°C cSt ASTM D445 13.58
Viscosity @ 40°C cSt ASTM D445 134.65
Viscosity Index ASTM D2270 96
Zinc, wt. % ASTM D5185 0.027