These guidelines are based on rigorous testing specific to your engine design. Sludge can clog oil passages, starving the engine of lubrication and leading to catastrophic failures such as seized bearings or warped components.
Traditional Oil Change Every 3000 Miles: Why Regular Changes Matter
Dust and metal shavings from normal wear and tear also suspend within the fluid. Unusual engine noise: Increased friction from dirty oil can cause knocking or tapping sounds, particularly on startup.
Over time, these particles exceed the suspension capacity of the oil filter, leading to a gritty mixture that acts like sandpaper inside the engine, accelerating wear on critical surfaces. Fresh oil is formulated with a precise balance of base stocks and additives that provide viscosity, thermal stability, and detergency.
Traditional Oil Change Every 3000 Miles: Why Freshness Matters
Dark, gritty appearance: Fresh oil is amber and translucent; old oil turns dark brown or black and feels gritty to the touch. A common question among vehicle owners is whether this vital fluid can actually go bad.
More About Can engine oil go bad
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