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Why Does It Still Show Oil Change Needed After Replacement

1 Answers

MacLeah

07/29/25 8:52pm

After changing the engine oil, the system still displays an oil change reminder because the maintenance record hasn't been reset. Here's more information about engine oil: 1. Engine oil, also known as engine lubricant, has a density of approximately 0.91×10³ (kg/m³). It serves multiple functions including lubrication and wear reduction, auxiliary cooling, sealing against leaks, rust and corrosion prevention, as well as shock absorption. 2. Engine oil is often referred to as the 'blood' of a car. The engine is the heart of the vehicle, containing numerous metal surfaces that move against each other at high speeds under harsh conditions, with operating temperatures reaching 400°C to 600°C. Only qualified lubricants can reduce engine component wear and extend service life under such extreme conditions. 3. Market-available engine oils can be broadly categorized into mineral oils and synthetic oils based on their base oil composition (vegetable oils are excluded due to limited production). Synthetic oils are further divided into full synthetic and semi-synthetic varieties, with full synthetic being the highest grade. 4. Engine oil consists of two main components: base oil and additives. The base oil determines the fundamental properties of the lubricant, while additives compensate for and enhance the base oil's performance deficiencies, imparting new characteristics, making them essential components of lubricants.

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