What color is typically associated with #2 fuel oil?

#2 fuel oil is typically associated with the color red. The coloration is an important aspect of fuel identification and regulatory compliance. Specifically, red dye is added to #2 fuel oil to indicate that it is for heating purposes and is not subject to the same taxes as diesel fuel, which is used for on-road vehicles. This coloring helps distinguish between different types of fuel oil and ensures that users are aware of the fuel type they are handling. This identification system is crucial for safety and regulatory reasons in the HVAC industry, as it prevents misfuelling and ensures proper handling and usage of the fuel.