DETAILING EXPERT | Aarush Sharma on Instagram: "Minor service is basic maintenance like engine oil change, oil filter check, fluid top-ups, and general inspection, while a major service (50,000 km+) includes deeper work such as replacing air, fuel, and cabin filters, spark plugs (petrol), transmission oil, brake fluid, coolant, and detailed brake and suspension checks. In petrol cars, major service mainly focuses on spark plugs, throttle body cleaning, and ignition system, whereas in diesel cars