Those that run diesel vehicles.
In the UK diesel is around £1.70 per litre! At the moment.
Kerosine C2 is very very similar. But just like red diesel used to be, is cheaper. At todays going rate of 71pence per litre on a DELIVERED to your house 400 litre load. So you need to either have an oil tank or know a man that does.
That makes it a hugely cheaper option. It is almost 71p at the moment but its demand in summer is far lower as this s used as a heting fuel. In summer it was 55p per litre. Some 3.5x cheaper tan official "legal" diesel.
Is it actually legal? No.
People used to get caught using red diesel in road vehicles because the police had many "police check" areas where they had a small thimble on a wire to "dip" your tank. If it was red or pink then you got prosecuted for tax evasion. But unknown to many is that your vehicle will run fine on C2 "heating oil" or C2 Kerosine, or whatever it is refered to.
Theres several types of kerosene. But only one that is great in a diesel engine.
Theres what most refer to as "light oil", "lamp oil", or paraffin. This is actually called C1 Kerosene in the industry. It has almost no lubricating property, and very low sulfur content. It will damage your engines. Not because of the way it burns, they run great! But because that low sulfur and its lighter thinner viscosity can cause rapid wear of pumps and injectors. You can use it as a degreaser in fact. It IS possible to use this but maybe 50 to 1 two stroke oil should be added.
Theres C2 Kerosene. This is very similar to diesel. Its high in sulfur and is more oily than C1. It is referred to as: Heating oil, or kero in the UK. It is a 28 second oil. Regular diesel is a 35 second oil. That refers to a redwood guage. Its a measure of viscosity. This is basically a slightly thinner version of the diesel you normally use. It actually burns a little cleaner in engines and in heaters than diesel. This is the one you want.
Other kerosines incliude aircraft grades like Jet-A or JP4, JP8 etc. Those will also run in your car, but like the paraffin are more refined. And lighter. So beware of lack of oiliness and add some!
So basically theres 2 worth looking at.
In the picture below I have some regular fuel station diesel fuel. Thats 35 second white diesel. And I have some UK Heating oil, or C2 kerosene. Thats a 28 second oil. If I dont lable these two, I cant tel them apart. They feel the same between your fingers. They look identical. They APPEAR to be the same viscosity (but are in fact slightly different) and the C2 kero smells a tiny it stronger/different. But not enough that you can tell which is which without some guesswork! So whats the real difference here? The C2 much less than half the price. Think about that every time you fill up...
Me? I have a petrol car. But I have a diesel (or C2 kero) 5kW truck cab heater in my house... So guess what I am using.
This is a quick comparison on my bed...