Motor oil is dense because it is formulated to provide lubrication and resist breakdown. For example, if crude oil has an SG of 0.
Why Oil Weight Isn't Constant: The Role of Density and Molecular Structure
These are the standard figures for common SAE grades: 5W-20, 5W-30, 10W-30: ~6. The formula is: Weight = 8.
8 lbs Crude Oil (Brent) ~7. 85, a gallon weighs about 7.
Why Oil Weight Varies Not Constant
Furthermore, different crude oils and refined products have unique molecular structures, leading to varying weights. Why Oil Weight Isn't a Single Number The core reason a gallon of oil does not have a single, universal weight is density.
More About How much does a gallon of oil weigh
Looking at How much does a gallon of oil weigh from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on How much does a gallon of oil weigh can make the topic easier to follow by connecting earlier points with a few simple takeaways.