![]() ![]() ![]() 55-gallon drum: 385 – 412 pounds (+ the weight of the drum).Based on that, the weight of the most common engine oil containers are as follows: How Much Does Engine Oil Weigh per Gallon?Īs a rule of thumb, one gallon of engine oil weighs about 7-7.5 pounds at 60° Fahrenheit. īased on the chart, the weight of 1 gallon of SAE 15W-40 oil is 7.44 pounds at 32° Fahrenheit (0 ° C) and 6.97 pounds at 195° Fahrenheit (90° C). At the same time, they become less viscous and easier to pour.Īs an example, here’s a chart that shows how the density of an SAE 15W-40 engine oil changes with increasing temperatures: Temp. The density of fluids tends to change with temperature, and engine oils are no exception.Īs a rule of thumb, the density of engine oils decreases when the temperature increases. In contrast, the density of an SEA 30 oil ranges from about 0.88-0.9, resulting in 7.34-7-47 pounds/gallon. Different engine oils have different densities, but many of them fall into the range of 0.84-0.9 g/ml, which translates to 7-7.5 pounds/gallon.įor example, the density of 0W-20 engine oil is about 0.84-0.85 g/ml, equal to 7.01.7.09 pounds/gallon. The weight of a gallon of engine oil primarily depends on its density. The exact weight of an engine oil depends on many factors, but the most important are density and temperature. However, this article will focus on the weight of the engine oils expressed in pounds rather than their viscosity.įactors That Affect the Weight of Engine Oil In contrast, the engines of older cars had tolerances that weren’t as tight, so they typically require 10W-30 or 10W-40 engine oils. The main idea behind this standardization is that different engines require different oil viscosity.įor example, today’s cars use 5W-30 or 5W-40 engine oils with lower viscosity. The viscosity of engine oils is described by an SAE (Society of Automotive Engineers) code, which is often referred to the “grade” or the “weight” of the oil.Īs a rule of thumb, the lower the SAE number, the more easily the oil flows. In other words, this measurement tells you how well an oil flows. The viscosity of engine oil measures their resistance to deformation at a given rate. This is because the term “weight” is also used to describe oil viscosity. When it comes to the weight of engine oils, there is a lot of confusion out there. To find out which oil and which viscosity you should use for your vehicle, refer to the manufacturer's service manual.5.11 Related Articles Engine Oil Weigh Explained The numbers to the right of the letter “W” are its hot grade.The higher the grade, the more viscous the oil will be at high temperatures. The lower the viscosity when cold, the more fluid the oil is at low temperatures and the more easily it can be pumped.Greater levels of fluidity at low temperatures make cold starts easier. The viscosity designation is made up of two numbers separated by the letter “W” (for “Winter” for the cold grade).The numbers that come before the W refer to the product’s cold grade, i.e., its viscosity at low temperatures. The SAE (Society of Automotive Engineers) has developed a means of classifying lubricants in order to specify their viscosity levels when hot and when cold. It should remain fluid at low temperatures (to make cold starts easier) and viscous at high temperatures (in order to provide protection and sealing).The grades that have been optimized for each of your oils are detailed in your service manual. To ensure that your vehicle performs optimally, your oil should retain a certain level of viscosity in all weather conditions: Viscosity varies according to temperature in the following way: the higher the temperature, the more fluid and less viscous the oil will be. An oil can, in effect, be characterized by its viscosity, its flow resistance or by the thickness of its oil film. Lubricants behave differently at high and low temperatures. Engine Oil Viscosity/ Motor Oil Viscosity
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