Many drivers think oil changes only affect engine performance, but the impact is much broader. Old engine oil loses its ability to lubricate and cool internal parts, increasing friction and heat. Over time, this stress affects seals, sensors, and even the transmission in some vehicles. Sludge buildup can restrict oil flow, leading to costly repairs. Regular oil changes are one of the simplest ways to protect a vehicle’s long-term reliability and avoid expensive breakdowns.
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