Used oil

Your question is not clear.

Presumably you have a 55 gallon drum filled with a mixture of used oil, drained from the sumps of both diesel and petrol fuelled engines - If this is not so, please advise here..

The following need to be known:

• Is the drum size 55 Imperial Gallons = British, or 55 Gallons US. ?
• Not all oils used in diesel engines are the same viscosity/specific gravity and type, the same goes for the oil from petrol fuelled engines - specific types and proportions contained in a drum are needed to calculate......

Thus your question cannot at this time, be answered, except to weigh an empty drum, then weigh it full, and note the nett weight of the oil mixture contained in that drum.

It does not matter if you have used oil, new oil, old oil etc. You are talking only volume.

1 kilogram = 1 Litre

55 Us Gallons = 208.2 Kilograms/ Litres

55 Uk Gallons = 250.0 Kilograms/ Litres

In UK/Pakistan/India UK gals used.

In USA Us Gals used

55 Us Gals = 45.8 Uk gals

55 Uk gals = 66.0 Us gals

The oil mixture density does have a bearing on the actual WEIGHT inside a container.

The basis of 1 litre being 1Kg weight, is for pure water @ 4°C.

Of course all oils float on water (try it and see).

Thus a drum of any size, filled with used oil mixtures will of course WEIGH less than if filled with pure water @ 4°C.

A useful conversion table is located here:

http://www.simetric.co.uk/si_liquids.htm

Trust that assists you, we don't want the question asker to get the wrong idea...

Oops!

1 kg of water at normal temp and pressure =1 litre; not 1 kg of oil. oil is less dense than water.

Why dont you just weigh it and then find a drum of comparable size to weigh to allow for subtraction of the tare.

Since we're talking DRUMS here, I much doubt laboratory precision is called for. Tare weight of the drum itself aside, and allowing some "slop" for different grades and purity of the used oil, and keeping in mind that a 55-gallon drum is full at a 50 gallon capacity (leaving 5 gals headspace to allow for thermal expansion) take 8 pounds per gallon times 50 gallons = 400 pounds, and divide by 2.2 to convert to kilograms = 181.8 kilos, net. This should be good enough for most field purposes.

Used oil weighs between 6.7 lbs per gallon and 8.3 lbs per gallon. So for a 50 gallon (55 gallon drum) converted to Kg would be 142.88 Kg to 188.24 Kg.

This are weighs taken from used oil which is burned at the facilities I manage. They range may change based on the impurities in the used oil.

I litre of used oil weighs approximately 0.96kg

Since each type of new or clean oil has its specific density, how can all used oil have the same approximate weight per volume?

More like .8 to .99 kg/l or avg of .895 kg/l. The weights are from analyticaly lab results we have done on our shipments of WDLF (waste-oil).