Does 20% Engine Oil Need to Be Changed?

[StAlexandra]

Whether 20% engine oil needs to be changed depends on the vehicle's mileage. Generally, engine oil should be replaced every 5,000-8,000 kilometers, but the specific interval should be determined based on the vehicle's condition. Below is relevant information about engine oil: 1. Function: Engine oil lubricates, cleans, cools, seals, reduces friction, prevents rust, and protects against corrosion in the engine. 2. Engine oil determines the engine's lifespan: The engine is the heart of a car, containing many metal surfaces that rub against each other at high speeds and in harsh environments, with operating temperatures reaching 400°C to 600°C. Under such extreme conditions, only qualified lubricating oil can reduce wear on engine components and extend their service life.