What is D1 oil type?

D1 oil type, also known as Marine Diesel Oil (MDO), is a category of fuel oil primarily used in marine applications. It is characterized by its low viscosity and specific gravity, making it suitable for use in medium-speed engines. D1 oil typically contains a blend of distillate and residual fuels, offering good combustion properties and lower emissions compared to heavier grades. Its composition and specifications can vary based on regulatory standards and operational requirements.