Synthetic oil, however, is engineered chemically to offer superior performance characteristics, including better viscosity stability in extreme temperatures, enhanced resistance to oxidation, and longer change intervals. After parking on a level surface and turning off the engine, locate the dipstick, wipe it clean, reinsert it fully, and pull it out again.
How to Check Your Dipstick for the Right Oil Viscosity
Conventional Oil Beyond viscosity, modern motor oils are categorized by performance standards that indicate their quality and suitability for specific engines. The API (American Petroleum Institute) service rating, denoted by letters such as SN, SP, or GF-6, signifies the level of detergent additives and protection against wear and deposits.
Conversely, using the wrong viscosity or performance grade can lead to inefficient operation, increased wear, and even severe engine damage over time. For vehicles sold in the United States, looking for the API "SN" or "SP" rating is generally recommended, as these meet the latest industry standards for efficiency and emission system compatibility.
How to Check Your Dipstick for the Right Oil Viscosity
Understanding the Basics: Viscosity and Grade The first step in determining what motor oil your car uses is understanding the basics of viscosity, which refers to the oil’s resistance to flow. The number after the dash indicates the oil’s thickness at operating temperature, with higher numbers providing a thicker film for protection under heat and stress.
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