Viscosity 1. mm 2 /s. Proven Technology Castrol VECTON with System Pro Technology™ has been proven in the … In other words, a SAE 30 motor oil is the same viscosity as a 10w-30 or 5W-30 at 210° (100° C). In simple terms, the word viscosity relates to a fluid’s resistance to flow. The smaller the variation, the higher the score on the index. The first number ends with the letter 'W', which stands for Winter. The “W” in the gear oil viscosity grade is for winter grade, like in engine oil viscosity. Calculate viscosity at °C. There are two numbers that define the viscosity of an oil. Given the influence that oil viscosity has on the engine, a technique was developed to calculate the effects of engine oils on fuel efficiency. The value at 100ºC is used to determine the SAE viscosity grade. Looking at the chart above if we were to select an SAE 5W30 engine oil we can see that this oil would be required to have a Cranking Viscosity, 6600cP max at -30°C, a Pumping Viscosity of 60,000 cP at -35°C, a Kinematic Viscosity of between 9.3 cSt and 12.5 cSt at 100°C and a High Shear Viscosity of 2.9 cP min at 150°C. The test is performed at 100ºC (212ºF) and/or 40ºC (104ºF), depending on the grading system being used. This calculator can be used to determine the right viscosity for the gear box with under the conditions we determine. The influence of viscosity on ring/liner friction . Most later engines are designed to use low viscosity engine oils to reduce internal drag. Measure the viscosity of used motor oil from your family's car, compared to brand new motor oil. The 30 reflects the viscosity grade of the oil when the engine temperature is at 212 ° F. If you live in a colder environment, a 5W rating oil will be able to start your engine a lot sooner than a 10W rated oil. Input the required information on the left to compare John Deere oil and filter annual costs with the competitor's offerings. For instance, an SAE 90 gear lube is comparable in viscosity to an SAE 50 or SAE 40 engine oil. To be meaningful, the viscosity values had to be obtained at the high shear rates associated with operation in specific sections of the engine. Oil Cost Calculator. MECHANINĖ INŽINERIJA stems from a trade–off between hydrodynamic and boundary effects – increased viscosity causes an increase in shear losses but a decrease in asperity contact, and vice versa. Viscosity Calculator . Use Equation 1 to calculate the viscosity of the oil at each temperature. Jack Harris. When we know the ISO Viscosity Grade (40℃) and the viscosity index, we can calculate the viscosity at 100℃. The second number is defined by how an oil flows when at higher temperatures normal engine operating temperatures. engine oil viscosity calculator. While the viscosity of the mixture may result in an engine oil somewhere in the SAE 40 range, where the “W” (winter viscosity) will end up is anyone’s guess. ENGINE OIL VISCOSITY GRADES previous. Although, it … Only emails and answers are saved in our archive. It is well-known from Hydrodynamic Lubrication Theory that viscosity plays a central role in the lubrication regime encountered in the machine element – the higher is the viscosity, the thicker is the oil film that separates the surfaces from touching each other. ISO 1500 ISO 1000 ISO 680 ISO 460 ISO 320 ISO 220 ISO 150 ISO 100 ISO … Evonik's Oil Additives specialists have developed tools to aid in the calculation of blending efficiency, viscosity index, base oil mixtures, CCS viscosity, and gear oil formulations. Check how the use of combined Plus-50 II premium engine oil and John Deere oil filters can make you save costs. where U is the oil's kinematic viscosity at 40 °C (104 °F), and L and H are the values of viscosity at 40°C for oils of VI 0 and 100 respectively, having the same viscosity at 100°C as the oil whose VI we are trying to determine. This takes less power from your engine, reduces fuel use, lowers exhaust emissions, and improves engine … There are scientific ways to measure viscosity with a viscometer; but, a do-it-yourselfer's kitchen has most of the tools necessary to obtain a simple measurement of a motor oil's viscosity. Gear Oil Viscosity Calculator. Decreased viscosity of oil with an increase in temperature is a very useful property for auto mechanics who change the oil. Categories Blog. We often have gear boxes where the correct viscosity gear oil is not known either because it is a used box and came without the manual, or it is now being used in a different setup from its original design. oil film thickness for any rotation speed and any oil clearance is evident from the graphs. Account Login ... Standard practice for viscosity-temperature charts for liquid petroleum products. 3 and 4 summarize all of the dead oil viscosity correlations described in Tables 2 and 3. Engine Oil Viscosity/ Motor Oil Viscosity . If an oil is so heavily contaminated that we suspect that the capillaries with diameters of approx. However, the effect becomes more considerable at greater clearance. Does the viscosity of motor oil change after it has been used? Low viscosity engine oils . The numbers in oil ratings relate to their kinematic viscosity when cold (the number preceding the "W" equates to 0 degrees Celsius) and hot (the number following the W is measured at 100 degrees Celsius). When we know the viscosity of an oil at 40°C and 100°C we can calculate its viscosity index. Higher V.I. oils will have a steeper slope. Calculator for kinematic viscosity extrapolation according to ASTM D341. Additional Reading. You can't just use any liquid to lubricate a car engine. Result. Take a few minutes to enter your fuel consumption to discover your Performance Rating and how Castrol VECTON with System Pro Technology™ can maximise your drain intervals. Viscosity changes for different types of fluids. This provides a starting point. Viscosity 2. mm 2 /s. This measurement is related to how an oil flows when it is cold, such as at engine start-up. Most motor oils’ viscosity is rated based on how thick it is at zero degrees Fahrenheit (represented by the number preceding the W, which stands … Viscosity of used motor oil change after it has been used engine oil and John Deere and! Combination increases the recommended drain interval up to 750 hours 10w-30 or 5W-30 210°! 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