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Can Full Synthetic Engine Oil Last for One Year?

1 Answers

SanPreston

07/30/25 3:21am

Full synthetic engine oil can last for one year. The recommended replacement interval for full synthetic oil is approximately one year or 10,000 kilometers. Common full synthetic oils are produced from Group III base oils through hydrogenation. Synthetic oils offer superior lubrication compared to mineral oils, with lower friction resistance, better oxidation resistance, and stronger cleaning properties. Full synthetic oils can operate across a wider temperature range and have a longer service life. They can achieve the same oil film requirements at lower viscosities. The high quality of synthetic oil ensures smoother cold starts, particularly noticeable in northeastern regions, extends engine lifespan, and reduces maintenance frequency. Due to their excellent cleaning performance, synthetic oils keep engine cylinders cleaner. The drawback is their higher manufacturing cost and price.

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