Friction is the enemy of efficiency. At least that’s the case in internal combustion engines. That's why oil is such an important ingredient to the longevity of an engine’s life, as well as its ...

Some thoughts on oils used to lubricate gasoline-fueled engines: 1. The latest, “highest” API (American Petroleum Institute) rating for oil used to lubricate spark-fired engines is “SN.” The API SN ...

ABSTRACT A low viscosity API SN 0W-16 engine oil was developed to achieve a 0.5% improvement in fuel efficiency over the current GF-5/API SN 0W-20 oil. Oil consumption and engine wear are the main ...

The most current API SN oil category for gasoline engine oils are soon to be superseded by new gasoline engine oil standard aimed at providing greater protection and fuel efficiency for today’s ...