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About 6 lbs per gallon.

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Kip Strosin

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1y ago
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15y ago

As a rough guide engine oil usually weighs about 0.87 kg/litre or about 7.2 pounds per US gallon. Unfortunately a rough answer is the best that can be done as there are hundreds of different types of engine oil with slightly different densities. To get an exact density we would have to know the details of the oil you're using. For a really accurate answer we would also have to state the temperature as the density of oil as with most fluids varies with temperature. Most oil manufacturers' provide data sheets for their products that should include density. If you search the manufacturers web site you should be able to get an accurate figure for a particular grade.

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9y ago

64oz a gallon, which would be 4 pounds.

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I believe the answer given above is erroneous.

A gallon contains 64 ounces in volume, not weight. A gallon of paint and a gallon of water will occupy the same volume of space but have different weights. Water is approximately 8.34 pounds. I believe mineral oil far more dense would weigh more than water.

In weight measurements, 64 oz = 4 pounds

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A gallon is 128 fluid ounces, not 64. And of course, fluid ounces are not a measurement of weight, only volume.

Mineral oil is generally classified by its weight, being referred to as 'light,' 'heavy,' 'extra heavy,' etc. This classification describes the density of that particular oil, so the heavier the oil, the more a gallon of it would weigh.

Generally, though, a gallon of mineral oil will weigh from 9 to 11 pounds (typically on the lighter side of that range, though).

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I have deleted the misinformed reply regarding "oil being lighter than water". Oil is not lighter than water (not even machine oil) it is more dense, causing it to have greater buoyancy. This is why it floats atop water! If what was written here was true, then the same could be said for an aircraft carrier made out of steel... and the only similarity between the aircraft carrier & oil being lighter than water, is that neither is true.

~

Mineral oil has a density of roughly 0.8 g/cc. There are about 3400 cc/gal. That yields a mass of a little over 3000 grams to the gallon. Once converted to ounces and pounds, the weight is around 6.68 lb/gal.

Oil (or an aircraft carrier, for that matter) doesn't float on water because it is denser. There is a confusion between density and weight here. Rocks are much denser than water. They sink, with the exception of pumice and other volcanic rocks with many air pockets. The presence of the air pockets in the structure of those rocks is what causes them to float. The air lowers the over-all density of the rock. The same is true of an aircraft carrier. Were you to fill the same volume with solid steel, that carrier would sink. Because there is so much open space within any such vessel, the vessel's over-all density is much lower than that of water. An equal volume of water would actually weigh much more than any ship. That is why they float.

Please don't conflate weight with density. They are related, but oil is "lighter than water" in the sense that it is less dense. I.e. it has a lower specific gravity than water. Mineral oil's specific gravity is .92. Of course, water is the standard that all specific gravity is compared to, so it has an specific gravity of 1.

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16y ago

1 gallon soy oil weighs between 7.35 lbs to 7.5 lbs

Industry standard is 7.35lbs

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9y ago

Depending on the use of the mineral oil, it can have different densities. Typically it weighs about 0.8 grams per cubic centimeter.

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15y ago

Just under 7 pounds (6 pounds, 14.8 ounces)

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9y ago

The specific gravity of 70 nf mineral oil ranges from 0.833 to 0.861. This gives a gallon the mass of 3.16 to 3.26 kilograms, or 6.97 to 7.19 pounds.

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11y ago

7.6 pounds/gallon

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14y ago

About 7 pounds

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14y ago

8.1lbs

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Q: What is the weight of one gallon of transformer mineral oil?
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Continue Learning about Physics

How much does transformer oil weigh?

7.6 pounds/gallon


How much does 90 weight oil weight?

A US gallon of 90 weight oil weighs approximately 6.8 pounds. An Imperial gallon of 90 weight oil weigh approximately 8 pounds.


What is the weight of 462 kg of transformer oil?

The oil should be greater than 100M Ohms resistance. If a flash over occurs within the transformer the oil has to be replaced


How much does 1 gallon of 15w40 motor oil weigh?

In order to convert from volume to weight, we must know the density. 15w40 has a density of about .879 kilograms per liter. One gallon is about 3.785 liters. Multiplying these two numbers gets us our weight, at approximately 3.327 kilograms.


What is heavier gallon of water or gallon of oil?

All the oils that I am aware of have densities lower than the density of water. Hence, a gallon of water will weigh more than a gallon of oil. Oil is less dense than water. Oil of any kind actually floats on water because oil it's chemical makeup. That means that an equal volume of it will weigh less than water. We look at the word "gallon" and think that a gallon of anything is still a gallon. But the question was about weight, not volume! If you took a gallon of water and sat it beside a gallon container of lead, it's obvious the lead would weight more, but both are still a gallon in size. Here are some densities of oils in kg/m3 (water has a density of 1000): Castor oil: 956 Cotton seed oil: 926 California crude oil: 915 Linseed oil: 929 Soybean oil: 926 Whale oil: 925 On a Sidenote: This was the last question posed in the first ever finals of the ABC Television show named Duel with host Mike Greenberg, The Car Salesman lost the chance at 1.8 Million Dollars on his incorrect answer. The weight of a gallon of water is useful to know for fish tank hobbyists. Plain water is usually approximately 8 pounds per gallon.

Related questions

What is the name for transformer oil?

Its "Mineral Oil".


What is the technical name for transformer oil?

Its "Mineral Oil".


What type of oil are used in transformer?

Mineral oil


How much does transformer oil weigh?

7.6 pounds/gallon


Which oil is used as transformer oil?

It is mineral oil nafta or parafin based.


What is the oil used in transformers?

Transformer oil is a highly refined mineral oil.


Which type of oil is used in transformer for cooling the windings?

Mineral oil


Is it necessary to filter new transformer oil?

Probably not. Transformer oil is generally highly purified mineral oil, so unless you're getting it from shady sources, you should be fine.


What can you do as preventative maintenance for a power pole transformer so that the mineral oil does not boil?

Lower the rating of the primary fuse feeding the transformer.


What is the Cost of SF6 gas insulated Transformer?

2-3 times more than the cost of a mineral oil filled transformer.


How much does 90 weight oil weight?

A US gallon of 90 weight oil weighs approximately 6.8 pounds. An Imperial gallon of 90 weight oil weigh approximately 8 pounds.


What is the weight of a gallon of oil?

69 pounds