What is D2 fuel oil and D gas oil?

D2 fuel oil, also known as diesel fuel, is a refined petroleum product used primarily in diesel engines for transportation and industrial applications. It has a higher viscosity and lower volatility compared to lighter fuels, making it suitable for heavy machinery and vehicles. D gas oil, often referred to as gas oil or heating oil, is a similar distillate fuel but is typically used for heating purposes, combustion engines, or in certain industrial processes. Both fuels are characterized by their sulfur content and energy density, influencing their environmental impact and regulatory considerations.