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What is the meaning of PAO engine oil?

2 Answers

RafaelDella

07/24/25 5:10am

PAO engine oil refers to a Group IV synthetic base oil. Here are some introductions about PAO engine oil: 1. Olefins: The PAO in engine oil refers to olefins. PAO is the abbreviation of PolyAlphaOlefin, meaning olefins, which are Group IV synthetic base oils. Polyalphaolefin base oils should be classified as synthetic base oils. 2. Synthetic oil: Synthetic base oils are composed of large molecules that are refined through complex chemical reactions such as polymerization and catalysis from ethylene and propylene dispersed from natural gas or gas in crude oil.

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StElijah

08/11/25 12:45am

The term 'PAO oil' sounds very technical, but it actually refers to a synthetic engine oil based on polyalphaolefins. I've been driving for over 20 years and have always used this type of oil, mainly because it's exceptionally resistant to both high and low temperatures, unlike mineral oils that tend to thicken and clump. During winter startups, the engine runs much smoother with less noise. PAO oil also extends oil change intervals—I change it every 15,000 kilometers, saving a lot on maintenance costs. Overall, this is a high-performance oil suitable for car owners who prioritize engine protection and longevity.

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