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What is 89-grade engine oil?

2 Answers

Jones

07/28/25 2:49pm

89-grade engine oil is a type of automotive engine oil. Overview of automotive engine oil: Engine oil, also known as engine lubricant (English name: Engine-oil), has a density of approximately 0.91kg×10³. It serves multiple functions for the engine, including lubrication and friction reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, as well as shock absorption. Composition of automotive engine oil: Engine oil consists of two main components: base oil and additives. Base oil is the primary constituent of lubricating oil, determining its fundamental properties. Additives are used to compensate for and improve any deficiencies in the base oil's performance, as well as to impart new characteristics, making them an essential part of lubricating oil.

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EmmettLynn

08/11/25 10:39pm

Back when I was fixing my old Jeep, I used 89-grade oil because the manual transmission was always making strange noises, and the mechanic recommended it. 89-grade is actually a type of gear oil, mainly used for transmission components like gearboxes and differentials, with common viscosities such as SAE 80W-90. It’s resistant to high temperatures and heavy loads, making it suitable for off-road or heavy-duty vehicles, ensuring smoother gear engagement. Normally, the oil change interval is every 50,000 kilometers, but it depends on the vehicle's condition. Neglecting it could lead to increased wear or noise. I advise owners to check the oil quality before use and avoid cheap, low-quality oil—otherwise, repairs could end up costing more.

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