What do the two numbers on oil mean

The 40 in a 10w-40 simply means that the oil must fall within certain viscosity limits at 100°C. This is a fixed limit and all oils that end in 40 must achieve these limits. Once again the lower the number, the thinner the oil: a 30 oil is thinner than a 40 oil at 100°C etc. As for the numbers and what they mean, the numbers are the "viscosity" of the oil. Viscosity refers to the thickness of the oil, lower numbers are thinner, higher numbers are thicker. More appropriately the viscosity number is the amount of a given oil that can flow through a given oriface within a fixed amount of time which determines the viscosity number.

Sep 11, 2019 Viscosity refers to the thickness or thinness of the oil. The latest engine oils are two grades. One is for lower temperature, and other is for higher. Running synthetic oil and need to top off with conventional oil? No problem, modern synthetic oils can be mixed with dino (conventional oil) without issue. Of   Jul 20, 2012 These oils have two numbers in its viscosity grade. You are probably familiar with 5W-30 or 10W-40, they are examples of these types of oils. The numbers on every can of oil indicate its performance characteristics when new but there are many misconceptions on what these numbers actually mean. For multigrade oils you will see two numbers (for monograde oils only one). The first  Two of the most common oils you'll encounter are 5w30 and 10w30. In this article we break down What Do the Numbers Mean? Most cars and trucks on the  Oct 3, 2013 What do all those numbers and letters mean, and are all brands the same Multi -viscosity oils are those denoted by two numbers with a 'W-' in 

Forum discussion: We've been debating oil brands and types here in the HI forum lately, and I They had two viscosities, SAE 30 and 10W-40. even know what the designations of oil quality mean past the viscosity numbers. Dollar General and other dollar stores do not always represent the best value.

An engine in a colder climate, where motor oil tends to thicken because of lower temperatures, would benefit from 0W or 5W viscosity. A car in Death Valley would need a higher number to keep the oil from thinning out too much. The second number after the "W" indicates the oil's viscosity measured at 212 degrees Fahrenheit (100 degrees Celsius). There are two scenarios where large amounts of these polymers are required as a rule. Firstly in "wide viscosity span" multigrades. By this I mean that the difference between the lower "W" number and the higher number is large for example 5w-50 (diff 45) and 10w-60 (diff 50) are what is termed as "wide viscosity span" oils. What do the numbers and letters mean? If you (vaguely!) remember the periodic table from high school chemistry, you know that N stands for Nitrogen, P for Phosphorus, and K for potassium. These nutrients are the three numbers on a fertilizer bag listed in order (N-P-K). The number is a resin identification code, used to help recycling plants sort materials. Recyclable plastics are labeled with numbers 1-7 to tell workers what kind of plastic it is, and how it should be processed. But it also helps recycling collectors determine what items they can accept — and which ones go in the trash. Before buying a pair of binoculars for hunting or birding or for astronomy, it is crucial to understand what do the numbers on binoculars mean.These numbers provide you with a wide range of information about the binoculars, all of which will help you to buy a pair that is right for you. The letters and numbers on light bulb packages are coded shorthand for the shape and size of each bulb. In other words, they precisely describe the shape or type of bulb as well as its diameter. 01 of 08. A . skaman306 / Getty Images. An "A" designates the teardrop shape of a standard light bulb. This is where the name "light bulb" comes from.

As for the numbers and what they mean, the numbers are the "viscosity" of the oil. Viscosity refers to the thickness of the oil, lower numbers are thinner, higher numbers are thicker. More appropriately the viscosity number is the amount of a given oil that can flow through a given oriface within a fixed amount of time which determines the viscosity number.

Jul 20, 2012 These oils have two numbers in its viscosity grade. You are probably familiar with 5W-30 or 10W-40, they are examples of these types of oils. The numbers on every can of oil indicate its performance characteristics when new but there are many misconceptions on what these numbers actually mean. For multigrade oils you will see two numbers (for monograde oils only one). The first  Two of the most common oils you'll encounter are 5w30 and 10w30. In this article we break down What Do the Numbers Mean? Most cars and trucks on the 

Jan 16, 2019 The second number will be dependent on two things; the temperature of your engine and the heat of your environment. If you live in a tropical 

Aug 22, 2017 Engine oil can be complicated and making the right choice for your vehicle can In 10W-40 oil, for example, the two numbers mean that it's a  An oil can, in effect, be characterized by its viscosity, its flow resistance or by the thickness of its oil film. The viscosity designation is made up of two numbers separated by the letter “W” (for “Winter” What does the oil weight actually mean ? Nov 18, 2015 There will be two numbers, a low number and high number. Mixing synthetic motor oil with conventional oil and vice-versa can cause the  What do the numbers and the "W" mean? W does not stand for Subaru Synthetic Motor Oil comes in two SAE weights: OW-20 and 5W-30. OW-20 is used in  Jan 29, 2018 For example, engine oil can put acids and silicon oxide into a thick have already deciphered what those numbers in the SAE ratings mean.

We talk about how engine oil, or motor oil, protects the engine from friction, wear and heat. Any liquid can be used as a lubricant - just look at water slides. Multigrade oils are rated with two numbers, for example a 10W40 oil has an SAE  

Oil Letters Like SJ, SH, etc. What Do They Mean? 10/18/2007 1:01 PM. Oil Letters Like SJ, SH, etc. What Do They Mean? LET ME THANK EVERYONE FOR THE INFO ABOUT " OIL LETTERS". NOW ALL I HAVE TO DO IS PUT IT TO GOOD USE. THANKS AGAIN RICH . Register to Reply: Register to Reply: 7 comments. Back to top. An engine in a colder climate, where motor oil tends to thicken because of lower temperatures, would benefit from 0W or 5W viscosity. A car in Death Valley would need a higher number to keep the oil from thinning out too much. The second number after the "W" indicates the oil's viscosity measured at 212 degrees Fahrenheit (100 degrees Celsius). There are two scenarios where large amounts of these polymers are required as a rule. Firstly in "wide viscosity span" multigrades. By this I mean that the difference between the lower "W" number and the higher number is large for example 5w-50 (diff 45) and 10w-60 (diff 50) are what is termed as "wide viscosity span" oils. What do the numbers and letters mean? If you (vaguely!) remember the periodic table from high school chemistry, you know that N stands for Nitrogen, P for Phosphorus, and K for potassium. These nutrients are the three numbers on a fertilizer bag listed in order (N-P-K). The number is a resin identification code, used to help recycling plants sort materials. Recyclable plastics are labeled with numbers 1-7 to tell workers what kind of plastic it is, and how it should be processed. But it also helps recycling collectors determine what items they can accept — and which ones go in the trash. Before buying a pair of binoculars for hunting or birding or for astronomy, it is crucial to understand what do the numbers on binoculars mean.These numbers provide you with a wide range of information about the binoculars, all of which will help you to buy a pair that is right for you.

You've had your blood pressure taken before -- but do you know what the two numbers on the reading mean? Find out here. You've had your blood pressure taken before -- but do you know what the two Oil Letters Like SJ, SH, etc. What Do They Mean? 10/18/2007 1:01 PM. Oil Letters Like SJ, SH, etc. What Do They Mean? LET ME THANK EVERYONE FOR THE INFO ABOUT " OIL LETTERS". NOW ALL I HAVE TO DO IS PUT IT TO GOOD USE. THANKS AGAIN RICH . Register to Reply: Register to Reply: 7 comments. Back to top. An engine in a colder climate, where motor oil tends to thicken because of lower temperatures, would benefit from 0W or 5W viscosity. A car in Death Valley would need a higher number to keep the oil from thinning out too much. The second number after the "W" indicates the oil's viscosity measured at 212 degrees Fahrenheit (100 degrees Celsius). There are two scenarios where large amounts of these polymers are required as a rule. Firstly in "wide viscosity span" multigrades. By this I mean that the difference between the lower "W" number and the higher number is large for example 5w-50 (diff 45) and 10w-60 (diff 50) are what is termed as "wide viscosity span" oils.