How flammable is diesel mixed with gasoline?

Mixing diesel with gasoline can create a highly flammable fuel. The flash point—the temperature at which the fuel produces enough vapor to ignite—is lower for a diesel-gasoline mixture than for either fuel alone. This means that the mixture can ignite more easily, increasing the risk of fire and explosion.

The flammability of diesel mixed with gasoline depends on the ratio of the two fuels. A higher proportion of gasoline makes the mixture more flammable. For example, a mixture of 20% gasoline and 80% diesel has a flash point of approximately 104°F (40°C), while a mixture of 50% gasoline and 50% diesel has a flash point of approximately 86°F (30°C).

It's important to note that diesel mixed with gasoline is not recommended as a fuel for any type of engine. Using this mixture can damage the engine and void the warranty. Additionally, handling and transporting diesel mixed with gasoline can increase the risk of fire and explosion. Therefore, it's crucial to follow safety precautions and proper guidelines when working with these fuels.