Working closely with European vehicle manufacturers our oils are developed, tested and certified to the exacting standards you would expect of a leading German manufacturer. Specialising in the production of oils with the latest OEM approvals and specifications, Liqui-Moly oil products are the perfect match for European and High Performance engines.
SAE VISCOSITY GRADE
SAE (Society of American Engineers) multi-grade classifications indicate the oil’s viscosity (or thickness) on start up and at normal operating temperatures. Most car makers specify multi-grade oils because they are designed to flow easily at cold temperatures, yet retain the right lubricating properties when hot.
The 5W (W = winter) indicates how the oil will flow when cold. The 40 refers to the oils viscosity at operating temperature. Higher viscosity oil (10W-60) delivers higher thermal stability where as lower viscosity oil (5W-40) minimises fuel consumption and emissions by reducing the energy required to circulate the oil. The correct viscosity is specified by the manufacturer and is designed to optimise the efficiency, performance and life of the engine.
USING THE RIGHT ENGINE OIL
When engines are required to produce more and consume less with extended service intervals, they are highly stressed. Many European vehicle manufacturers consider the generally established oil specifications to be inadequate or out-dated as the function of engine oil has dramatically changed due to these advancements. Using motor oil that does not specifically meet the exacting standards of the manufacturer may void your warranty and can lead to extra fuel consumption, increased carbon emissions, premature engine wear and possible damage.
The performance characteristics of oil are determined by the quality of the base oil as well as the chemical agents that are blended with it. So the engine oil SAE viscosity grade is only part of the story. To ensure you select the right oil for your specific make and model refer to the vehicle owner’s manual for the correct viscosity/specifications and select the appropriate product. Alternatively refer to the Liqui-Moly Oil Guide HERE.