During winter and for cars used in cooler regions, your engine will benefit from using oil with low winter viscosity. Oil with 5W-30 grade thins out more quickly at high temperatures as compared to oil with 5W-40 grade. For instance, oil with 5W-30 grade thickens less than oil with 10W-30 grade in cold weather. Numbers after XW indicate viscosity at 100 degrees Celsius and represent oil resistance to thinning at high temperatures. Lower number, less oil thickens in cold weather. Number preceding W rates oil flow at zero degrees Fahrenheit. Viscosity is notate using the common classification XW-XX. The Society of Automotive Engineers developed scale for both engine and transmission oils. Thick oils are better at maintaining film strength and oil pressure at high temperatures and loads. Thin oils reduce friction in engines and help engines start quickly during cold weather. Thin oils have lower viscosity and pour more easily at low temperatures than thicker oils that have higher viscosity. * Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actionsĮngine Oil viscosity refers to how easily oil pours at a specified temperature. * Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.
Valvoline full synthetic motor oils are designed with extra levels of detergent and antioxidant to provide outstanding deposit and heat protection. Our North American SynPower 5w20 5w30 and 10w30 exceed ILSAC GF-5 requirements and carry API starburst on the front label.
We have specially designed Valvoline SynPower 5w40 for application in high performance European or diesel passenger cars and this oil carries specific OEM approvals such as Mercedes Benz, Volkswagen, Porsche and BMW. All of Valvoline's full synthetic motor oils are API licensed to ensure quality for North American vehicle application. Valvoline full synthetic motor oils are high performing, high-quality oils formulate with full synthetic base oils and top tier additives to provide an increased level of performance. Valvoline's full synthetic motor oils meet and exceed the same specifications as these two products. Higher number, thicker oil at a specified temperature. The higher number, following w refers to hot weather viscosity, or how fluid your oil is at hot temperatures. For example, 5W-motor oil will flow better at lower temperatures than 15W-motor oil. The lower this number is, less viscous your oil will be at low temperatures. The first number in the oil classification refers to cold weather Viscosity. First, narrow the options down by choosing the closest-related category to your question.
Whether you have questions pertaining to motor oil performance, synthetic oils or how to recycle your used oil, you can get the answers youre looking for below.