American Petroleum Institute
The American Petroleum Institute (API) is a leading oil and gas industry trade association. The program certifies that engine oil meets certain Original Equipment Manufacturer (OEM) quality and performance standards. It is engaged in public policy and industry lobbying efforts, and environment, health and safety regulations, training and certification programs, and establishing industry standards. Read on about what you need to read on the labels.
Passenger Cars
Heavy Cars
Society of Automotive Engineering
The Society of Automotive Engineering (SAE) came up with a brilliant code system to grade motor oils according to their viscosity. Viscosity is measured by how long it takes a certain amount of oil to flow through a container at a specific temperature. If a liquid has high viscosity, it means it will take a longer time to flow whereas liquids with low viscosity flows faster.
