I got a 6 gallon box of Castrol 5W-20 for a good price.

I need to measure out 6 quarts, but don't have a graduated container to put it in, and I don't want to buy one.

My idea is to take the oils density from the PDS and multiply it times 12 pounds to get the weight of 6 quarts of oil. Or multiply the density times 32oz to get the weight of one quart.

The Castrol PDS I have shows a density of 0.848 for 5W-20, but it also says that 1 gallon weighs 7.063 pounds.

Water has a density of 1 and 1 gallon of water weighs 8 pounds, so if I take the 0.848 density and multiply it by 8 pounds I get 6.784 pounds which is different than what the Castrol PDS shows at 7.063 pounds.

Am I doing something wrong in my calculations.

I need to measure out 6 quarts, but don't have a graduated container to put it in, and I don't want to buy one.

My idea is to take the oils density from the PDS and multiply it times 12 pounds to get the weight of 6 quarts of oil. Or multiply the density times 32oz to get the weight of one quart.

The Castrol PDS I have shows a density of 0.848 for 5W-20, but it also says that 1 gallon weighs 7.063 pounds.

Water has a density of 1 and 1 gallon of water weighs 8 pounds, so if I take the 0.848 density and multiply it by 8 pounds I get 6.784 pounds which is different than what the Castrol PDS shows at 7.063 pounds.

Am I doing something wrong in my calculations.