[350HP930]

When it comes to oil and gasolene fires dry chems are the best even though they will make a mess when you use them.

CO2 and Halon are a gases that will quickly blow and/or diffuse away and if you have some burning oil and gas that is above flash point it is likely to reignight once the gas has blown off.

Dry chem will usually coat the burning mess well enough to keep it from lighting up again.

I rather have a powdery mess than a burned up car.

Dry chem also won't suffocate you if you use them in a confined space.