Can unopened engine oil produced in 2017 still be used?

1 Answers
SamanthaMarie
07/30/25 10:58am
Due to its relatively stable chemical properties, unopened engine oil actually has a long shelf life. However, it is still best to use it within the specified period. Here is an introduction about engine oil: Introduction: Engine oil, motor oil, or engine lubricant is a substance enhanced with additives in base oil. Composition: It mainly contains anti-wear additives, detergents, dispersants, and multi-grade oil viscosity index improvers. Engine oil is used for lubricating internal combustion engines. Function: The main functions of engine oil are to reduce friction and wear on moving parts, and to remove sludge and varnish from the engine. It also neutralizes acids produced from fuel and lubricant oxidation, improves the sealing of piston rings, and cools the engine by carrying away heat from moving parts.
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