Is diesel oil and diesel the same?

Answer:
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.
First answer by ID1454100350. Last edit by Mikefromramsbottom. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].