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. Whenever there are colder temperatures in your environment, weight is a term for crude oil. it was never meant to be used for engine oil viscosity number rating. SAE started this rating.

9 May 2014 Tech 101 – What oil viscosity ratings mean | Meeting the Transportation Needs Choosing the correct oil viscosity can be an important factor in the oil's viscosity at the lowest recommended temperature, the higher number  31 Jan 2018 But using an oil viscosity one grade higher or lower likely won't do the second number in each oil's viscosity rating (i.e. “30”) is the same. 18 Mar 2019 SAE-30 is single-viscosity or mono-grade engine oil. However What does 10W -40 mean? Here, higher the number thicker is the oil. 4 Aug 2019 The SAE Viscosity Number did not in any way imply suitability for any NO IDEA what the SAE Numbers on Motor Oil Labels really mean. Probably the most important property of oil lubricant is the absolute viscosity. Viscosity index (VI) is a number that indicates the resistance of an oil to changes   The second and higher number indicates the lubricant's viscosity under greater The colour of an oil has no special meaning, but depends on a number of  What if the specific gravity of the object is the same as the specific gravity of the liquid? This will mean that it will not sink,but fully submerge under the liquid- hovering! The forces on a particle in a liquid are buoyant force and it's weight mg. per meter cubed float in oil that has a density of 850 kilograms per meter cubed, 

What do these viscosity grades mean? As with monograde oils, the “W” still means “Winter”. The number before the W represents the winter viscosity grade.

29 Jul 2016 Using the correct oil will prolong the life of the engine and can improve fuel The number that follows the 'W' indicates the oil's viscosity at  24 Apr 2018 Learn about what SAE stands for and what the global oil standards are. The SAE program for testing is centered around 30 as the viscosity number. It was meant to act not just in an assistance role, but also to educate and  2 Aug 2019 They are actually measurements of viscosity, which refers to the thickness level of the oil fluid. The “W” in the middle of each number set refers to “  20 Feb 2020 SAE number, code for specifying the viscosity of lubricating oil, Attention has sometimes focused on changes occurring in the way the real  What do the numbers and the "W" mean? W does not stand for weight, it stands for Winter. The SAE classifications characterized the viscosity at low and  In combustion engines, engine oil fulfils a number of purposes. One of Engine oil also has to cool, clean, provide protection against corrosion and seal combustion chambers. Viscosity is one of the most important properties of engine oil. Extensions to the intervals for changing lubricants mean that oils have to meet  9 May 2014 Tech 101 – What oil viscosity ratings mean | Meeting the Transportation Needs Choosing the correct oil viscosity can be an important factor in the oil's viscosity at the lowest recommended temperature, the higher number 

Therefore, on the bottles of this type of oils, after the SAE you'll find the letter W ( from Winter) and a number indicating the oil's viscosity at low temperatures. An oil 

The first number in the oil classification refers to a cold weather viscosity. The lower this number is, the less viscous your oil will be at low temperatures. For example, a 5W- motor oil will flow better at lower temperatures than a 15W- motor oil. This leaves them still wondering what the viscosity numbers really mean on a bottle of motor oil. Simply put, viscosity is the oil's resistance to flow or, for the layman, an oil's speed of flow as measured through a device known as a viscometer. The thicker (higher viscosity) of an oil, the slower it will flow. The viscosity grade (for example, 5W-30) tells you the oil's thickness, or viscosity. A thin oil has a lower number and flows more easily, while thick oils have a higher number and are more resistant to flow. Water has a very low viscosity -- it is thin and flows easily. Honey has a very high viscosity -- it is thick and gooey.

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 

This leaves them still wondering what the viscosity numbers really mean on a bottle of motor oil. Simply put, viscosity is the oil's resistance to flow or, for the layman, an oil's speed of flow as measured through a device known as a viscometer. The thicker (higher viscosity) of an oil, the slower it will flow. The viscosity grade (for example, 5W-30) tells you the oil's thickness, or viscosity. A thin oil has a lower number and flows more easily, while thick oils have a higher number and are more resistant to flow. Water has a very low viscosity -- it is thin and flows easily. Honey has a very high viscosity -- it is thick and gooey. The short answer: The numbers represent the viscosity of the oil and the W stands for WINTER. The long answer: The Society of Automotive Engineers (SAE) has established a numerical code system for grading motor oils according to their viscosity characteristics. Because the viscosity of oil changes with temperature, These numbers are usually defined as oil weights. Single viscosity oils are normally referred to straight weight oils. The dynamic viscosity of single viscosity winter oils is determined at a various cold temperature as established by SAE J300. What the numbers mean. The numbers and letters on a container of multi-grade motor oil will tell you at a glance what its operating range is and how it compares to other oils. Here’s an example: 5W-20. 5: This is the oil’s viscosity rating at low or winter temperatures. W: This stands for “winter,” and is part of the “5” rating

The second and higher number indicates the lubricant's viscosity under greater The colour of an oil has no special meaning, but depends on a number of 

Oil weight is a term used to describe the viscosity of an oil, which means how well it flows at a specific temperature. The Society of Automotive Engineers (SAE) assigns a viscosity number, or weight, to oil based on its flow at 210 degrees F, which is roughly the standard operating temperature for most motors. 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. The number after the "W" is the viscosity after being warmed by the engine to operating temperature. The numbers and letters on a container of multi-grade motor oil will tell you at a glance what its operating range is and how it compares to other oils.

2 Nov 2017 Choosing the right engine oil weight doesn't have to be complicated. Here's a look at what the numbers on the bottle actually mean. 31 Jul 2017 The short answer: The numbers represent the viscosity of the oil and the W stands for WINTER. The long answer: The Society of Automotive  The lower this number is, the less viscous your oil will be at low temperatures. For example, a 5W- motor oil will flow better at lower temperatures than a 15W-