Every automobile engine needs an oil, but not just any oil will do. Modern engines are designed and built to exacting standards and require oils that meet very specific industry and automaker specifications to ensure long service life. Failure to use the right type of oil, and document its use, could void your new-car warranty.
Most late-model cars require synthetic-blend or full-synthetic, low-viscosity, multi-grade, resource-conserving oils that minimize friction and maximize fuel economy. However, choosing the right oil is not always easy. The proper oil for your make and model of the vehicle must have the correct SAE viscosity grade, meet performance standards set by the API, ILSAC, and/or ACEA, and comply with any unique specifications established by the automaker or engine manufacturer. These requirements are detailed in your vehicle owner’s manual, and your auto repair shop can provide information on your vehicle’s recommended oil specifications as well.
Depending on vehicle age, type of oil, and driving conditions, oil change intervals will vary. It used to be normal to change the oil every 3,000 miles, but with modern lubricants, most engines today have recommended oil change intervals of 5,000 to 7,500 miles. Moreover, if your car’s engine requires full-synthetic motor oil, it might go as far as 15,000 miles between services! You cannot judge engine oil conditions by color, so follow the factory maintenance schedule for oil changes.