diesel is a fuel that has oil in it
"Diesel oil" or "Heavy oil" is another term for diesel fuel. Not to be confused with "engine oil for a diesel engine" which means lubricating oil specially formulated for use in diesel rather than petrol engines.
Diesel just like gasoline and kerosene are a refinement of crude oil. Diesel is known as 'diesel oil' or 'heavy oil' and is the heaviest distillate of crude oil. Petrol is a spirit and is the lightest distillate.
Diesel fuel is often referred to as "diesel oil" or "heavy oil". Do not confuse this with "engine oil for a diesel engine" which means "lubricating oil specially formulated for use in diesel engines". My first Ford Fiesta diesel's tax disc said - "Fuel - Heavy Oil". They've now realised that this term is anachronistic, and my latest tax disc reads "Fuel - Diesel". To be pedantic - Diesel fuel is an oil - Petrol is a spirit.
No #4 diesel fuel oil is for oil burners and will not ignite in a diesel egine
There are not any calories in diesel fuel oil. Diesel fuel oil should not be consumed by humans or animals. Consumption of the fuel oil can be fatal.
any diesel oil will be fine
The color of synthetic diesel oil is red.
I am not sure what you are asking but putting oil for diesel engines in a gasoline engine with some oil in it would not be good, or vise versa
the difference between heating oil and diesel is a red dye, you can use diesel just fine
15w40 diesel rated conventional or 5w40 diesel rated synthetic oil
No Diesel is one of many things made from crude oil.