Your car’s engine needs oil to keep moving parts lubricated, especially since the tolerances are minuscule between parts such as the bearings, crank, rings, and cylinder walls. Differing temperatures cause the metal parts to expand and contract, and when those parts are expanded, the tolerances are even tighter. Without a lubricant, the engine might seize. Changing this lubricant — your oil — on a regular basis ensures that it performs as designed.
If you are using synthetic oil, the interval between oil changes can be extended. Manufacturer recommendations range from 5,000 miles to 7,500 miles, on average. Some recommended intervals might be shorter or longer. So, how many miles between oil changes is just right? Even when using synthetic oil, it depends on the manufacturer’s recommendations and the way you drive. It’s also worth noting that a full synthetic oil change, while pricier than a regular oil change, is better for the environment and does allow you more time between oil changes.
Oil detergents and additives are what break down over time. The additives also prevent sludge from building up, and they prevent corrosion as well. As these detergents break down, the oil offers less protection for your engine.
To answer the question: “How often do I need an oil change?” check your owner’s manual. It may recommend 7,500-mile oil changes when using full synthetic oil and 5,000-mile intervals for oil that is only partially synthetic. Be sure to read all of the material the manufacturer provides, as the way you drive will determine which recommendations to follow. Factors that could affect the recommended interval between oil changes include:
The owner’s manual will state the recommended oil change interval for adverse driving. The interval could be as low as 3,000 miles if you constantly drive your vehicle in adverse conditions.
If you still use mineral oil — regular oil — the answer to your question, “When do I need an oil change?” is quite simple: every 3,000 miles. Mineral oil has more impurities and the oil detergents tend to break down sooner than is the case with synthetic oil. This is because synthetic oil is cleaner than mineral oil.
Regular oil changes are necessary, and there’s no replacement for this routine maintenance. However, you can make your oil last longer and protect your engine by adding STA-BIL® 360° Oil Stabilizer from Gold Eagle. This product, when added to the oil crankcase, gives the oil detergents a boost when they are wearing down. STA-BIL 360° Oil Stabilizer:
Add a bottle with every oil change — it is safe for use with all types of oil.
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