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What is the difference between different grades of motor oil? What do the numbers and letters mean? Here's a hint: the 'W" in 5W-30 does not mean "weight". Feb 2, 2025 ... ... number is, the heavier the oil). Look at how the darker segments of ... Come to mention it: what does this all spell for negotiations with ... One of the numbers is followed by a W, which refers to “winter” and indicates the viscosity grade in cold temperatures. An oil with a low SAE W number will flow ... Sep 9, 2019 ... The numbers on the engine oil generally say 10W40 or 5W30. These numbers represent viscosity and temperature. Number on the left of the alphabet ... The viscosity of an oil is measured by its resistance to flow. There are two numbers that define viscosity meaning. The first number precedes the letter 'W' ... How Often Should You Change Your Oil? ... With a little explanation it's easy to understand what all of the letters and numbers mean on your tire's sidewall. Jan 17, 2025 ... If you have questions on what RIN is, how RINs are traded, what types of RIN transactions include, and how EPA records all transactions ... What does the 10W30 designation on engine oil mean, and how does it affect equipment? We answer these questions and more in this article. Fire Extinguisher Classes · Class A puts out ordinary combustible fires (wood, paper, plastic, etc.) · Class B puts out flammable liquid fires (oil, gas, ... Feb 18, 2022 ... What do These Numbers Mean? Typically, motor oil grades range from 0 to 60. The lower the number, the lighter and less viscous the oil is. The ...