Learn what 5W-30 means on that bottle of oil you are putting in your engine. Why does it matter what weight of oil you use? When it's ok to change oil viscosity depending on where you live and how When you see an oil that’s rated SAE 30, this translates into an engine oil that has a viscosity between 9.3 cSt and 12.5 cSt at 212 degrees F. Multigrade Oils Sometimes it gets much colder than room temperature — particularly during the winter months when the thermometer can plunge well below freezing. During normal driving today the average car can stop and start as many as 18,000 times a year, and all that idling in traffic or waiting at junctions causes microscopic wear in your engine. The lower the “W” number the better the oils cold temperature/cold start performance. The 40 in a 10w-40 simply means that the oil must fall within certain viscosity limits at 100 degC. This is a fixed limit and all oils that end in 40 must achieve these limits.
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 What Do Oil Numbers Mean? A key characteristic of how oil does its job is viscosity – the thicker the oil, the higher the viscosity number. Thinner is oils move Aug 23, 2012 So, what do these numbers mean? Engine oil grade. Photo credit: Thinkstock. Choosing the right grade of motor oil
encourage a structure where a small number of global engine oil specifications replace Nov 5, 2014 And why two numbers are there 20 & 40? Surprisingly! W = #WINTER, not weight or watt or anything else for that matter) and engine oils use a Aug 4, 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. Base numbers generally apply to diesel engine crankcase oils. Base number represents the level of alkalinity reserve available for neutralizing acids formed Oct 1, 2019 What do these numbers mean and why do they matter? These oil “weights” are not weights at all, but a measure of the motor oil viscosity. Find out exactly what Car & Motorcycle Engine Oil Grades / Viscosities actually mean: The numbers on every can of oil indicate its performance characteristics
What do these numbers mean? 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 thickness of a fluid. 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 Automotive oil comes labeled with letters and numbers coding oil weight and additives. The different characters stand for engine-cleaning protection, what type of engine to use the oil on and the viscosity of the oil at different temperatures. Viscosity is the stickiness or thickness of the oil. It affects the
There are two numbers that define the viscosity of an oil. The first number ends with the letter 'W', which stands for Winter. This measurement is related to how an oil flows when it is cold, such as at engine start-up. The second number is defined by how an oil flows at normal engine operating temperatures. What the numbers actually stand for: The oil viscosity (or thickness) is measured in Centistokes. ‘Centistokes’ are named after the Victorian engineer Sir George Stokes, who timed ball bearings as they sank through oil to get this measurement (the modern equipment used to test oil viscosity is a bit more complex nowadays……). Learn what 5W-30 means on that bottle of oil you are putting in your engine. Why does it matter what weight of oil you use? When it's ok to change oil viscosity depending on where you live and how