Nov 21, 2021 · Viscosity. In terms of viscosity, the 10w40 motor oil means it has ten as weight and forty as a viscosity grade. In the 20w50, it means twenty for weight and fifty for viscosity grade. So for a twenty viscosity grade, it means that at one hundred degrees celsius, it will be half as thick as zero degrees celsius. Jul 26, 2022 · Along with 15W-40, 5W-30, and 0W-20, SAE 10W-30 motor oil is among the low-temperature multi-grade fuels that are frequently suggested by manufacturers. This engine oil performs as an SAE 10 at sub-zero temperatures yet as an SAE 30 at normal operating conditions. This oil is suitable for cold temperatures up to -30°C/-22°F. Mar 1, 2022 · The 10-30 is not allowed for new installations. Use the 14-30 for a 30A circuit as it has the ground connection missing from the 10-30. Existing 10-30 installations, i.e. dryer outlets are grandfathered. These days when you purchase a new electric dryer you also need to purchase the correct power plug wire kit, i.e. 10-30 or 14-30 for your home. Mar 7, 2011 · The first number (10w in 10w30) is how well the oil flows cold. (it will flow the same as cold 10w oil). The second number is the hot flow. You don't want to use 5w30 in a push mower, it'll just burn up, because it's so thin. Straight 30w will be thick as honey when it's really cold (that's why it isn't reccommended for winter use), but thin Sep 26, 2022 · For example, if you’re already using 10W-40 oil, 15W-40 will be super bad for you. Similarly, 5W40 will be an upgrade but 5W-30 won’t. Simply put, going lower on operating viscosity will be objectively bad for your car. Also, going higher from 0w40 may severely damage your engine during winter. Nov 14, 2018 · Factory oil is Besco Duramax 10w-30. Other recommendations in the handbook are all 15w-40: Shell Rimula R3X, or R2 Extra or R2; Exxon Delvac MX; Caltex Delo 400 or Gold. And a few others listed. I ran the factory 10w-30 oil for for about the first 2 years of ownership, and a DIY change of the oil every 10,000km. .

10 40 vs 10 30