Jul 9, 2018 · Learn about motor oil weights like 5W-20 and 10W-30. Understand viscosity ratings, cold weather performance, and how to choose the right oil for your vehicle.

Feb 26, 2025 · In this guide, we’ll break down engine oil weight classifications, their meaning, and how they impact engine performance. We will also provide a detailed engine oil weight chart in a tabular format for easy reference.

Oil viscosity refers to how thick or thin the oil is and how well it flows at different temperatures. This is represented by the numbers you see on oil bottles, such as 5W30 or 10W30, and it’s measured by the Society of Automotive Engineers (SAE).

Oil weight is determined based on the oil’s flow at a standard operating temperature of 100 °C (212 °F). Depending on the based oil used in the formulation, there are different viscosity values and differences between temperature properties, stability, and oil consumption.

Castrol's oil viscosity chart makes it easy to understand oil weight, thickness and grades. Understand how viscosity affects your engine's performance.

Mar 23, 2011 · Many petroleum products are graded according to the ISO Viscosity Classification System, approved by the international standards organization (ISO). Each ISO viscosity grade number corresponds to the mid-point of a viscosity range expressed in centistokes (cSt) at 40°C.

Jul 26, 2022 · Confused about selecting the oil with the right viscosity? Read on to learn more the oil viscosity chart and choose the right oil for your vehicle.

Nov 2, 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.

Feb 18, 2025 · In this post, we’ll cover everything you need to know about engine oil thickness, including viscosity ratings, how to read SAE oil grades, and a detailed engine oil thickness chart in a table format.

As a rule of thumb, engine oil weighs about 7-7.5 pounds per gallon at 60° Fahrenheit. Based on that, a 1-quart bottle of oil weighs approximately 1.75-1.9 pounds, while you can expect the weight of a 5-quart bottle of oil to be in the range of 8.75 – 9.4 pounds.