What does the numbers in motor oil mean

Two of the most common oils you'll encounter are 5w30 and 10w30. What Do the Numbers Mean? Multi-grade oils are designed to be thin in cold weather so your engine gets the protection it needs while the engine is still warming up. A: That's the viscosity range of the oil, i.e., how thick it is. 20W means that this oil behaves exactly like a 20 weight oil at 0F, and behaves like a thicker 50 weight oil 

The higher numbers of a gear oil (e.g., 75W-140) do not mean that it has higher viscosity than an engine oil. In anticipation of new lower engine oil viscosity grades  31 Jul 2017 The number after the W describes how thick the oil is at the engine's normal operating temperature. X0344_Endurox-XLF-SAE-10W40-5L-V.png  16 Jan 2019 In a nutshell, the numbers before and after the W represent viscosity. The letter “ W” itself stands for Winter. As you may know, viscosity means the  SAE 5W-30, 15W-40, 10W – what does it all mean? And does it really make a difference which goes in your car? The numbers you see on your motor oil can 

Single or compound numbers convey the oil's weight or viscosity; 30 and 10W-30 are examples. With the introduction of new oil additives starting in the 1940s, the compound viscosities replaced single-viscosity motor oil. The "W" refers to "winter." The first number is the viscosity when the oil is cold.

3 Apr 2013 An example of that would be an SAE 50. Thinner (Lower Viscosity) oils are assigned a lower number like SAE 10. Multi-Grade Motor Oil. To make  Two of the most common oils you'll encounter are 5w30 and 10w30. What Do the Numbers Mean? Multi-grade oils are designed to be thin in cold weather so your engine gets the protection it needs while the engine is still warming up. A: That's the viscosity range of the oil, i.e., how thick it is. 20W means that this oil behaves exactly like a 20 weight oil at 0F, and behaves like a thicker 50 weight oil  15 Jun 2019 In this article, you will learn everything about engine oils. In this article, you will learn about the meaning and a lot more about the SAE Motor oil. The number mentioned after “W-XX” indicates the oil viscosity measured at  The more viscous, the slower it will move. Apple juice has low viscosity, cold honey has high viscosity. So what do the numbers mean? The number preceding the  23 Aug 2012 So, what do these numbers mean? Engine oil grade. Photo credit: Thinkstock. Choosing the right grade of motor oil  24 Apr 2018 The car's motor is its essential part and the type of oil we put in it is of what motor oil is for, have you ever noticed the S.A.E. Number on motor oil? It was meant to act not just in an assistance role, but also to educate and 

14 Dec 2017 what do the numbers mean, then? Most oils are multi-grade, meaning they operate in a range of temperatures and driving conditions. They are a 

What do the oil numbers 10W-30 mean? Your engines rotating parts are protected from heat and friction by a thin layer of oil. Understanding the viscosity ratings and detergents used in today's modern oils is critical to keeping your engine running. This is what the numbers mean. The first number is the viscosity of the oil, how it will flow, when cold. The second number is the viscosity, how it will flow, when hot. So that means a 5w-20 motor oil will have the viscosity characteristics of a 5 weight motor oil when cold. It also means that it will have the viscosity characteristics of a 20 weight when hot.

The best engine oils have a viscosity that is neither so high (thick) that it will The viscosity rating is the number of seconds rounded to the nearest multiple of 

The more viscous, the slower it will move. Apple juice has low viscosity, cold honey has high viscosity. So what do the numbers mean? The number preceding the  23 Aug 2012 So, what do these numbers mean? Engine oil grade. Photo credit: Thinkstock. Choosing the right grade of motor oil  24 Apr 2018 The car's motor is its essential part and the type of oil we put in it is of what motor oil is for, have you ever noticed the S.A.E. Number on motor oil? It was meant to act not just in an assistance role, but also to educate and  The 'W' rating can be 5, 10, 15 or {20;} lower numbers mean the oil is thinner in cold temperatures, necessary for icy climates. The second 

In the case of motor oil, it is the thickness of the oil under certain temperature conditions. The number to the left of the W refers to the oil viscosity when the temperatures are low. The number to the right of the W refers to the oil viscosity at hotter temperatures. If the first number is low, it means that you have thin oil.

24 Apr 2018 The car's motor is its essential part and the type of oil we put in it is of what motor oil is for, have you ever noticed the S.A.E. Number on motor oil? It was meant to act not just in an assistance role, but also to educate and 

The numbers indicate the oil grade, which is a measure of its viscosity. A layman can think of viscosity as a liquid's thickness. Consider the difference between  3 Apr 2013 An example of that would be an SAE 50. Thinner (Lower Viscosity) oils are assigned a lower number like SAE 10. Multi-Grade Motor Oil. To make  Two of the most common oils you'll encounter are 5w30 and 10w30. What Do the Numbers Mean? Multi-grade oils are designed to be thin in cold weather so your engine gets the protection it needs while the engine is still warming up. A: That's the viscosity range of the oil, i.e., how thick it is. 20W means that this oil behaves exactly like a 20 weight oil at 0F, and behaves like a thicker 50 weight oil