CO2 is the correct option.
Dry Chemical Powder or Foam will do a great job of messing up everything in the vicinity and falling back towards earth and the extingusiher operators lungs.
As a general rule...
Dry Chemical Powder (Red Bottle with White Stripe) is good for Brake and Wheel fires.
Foam is good for Fuel and Oil when on a horizontal surface.
CO2 is good for everything else.
Just be aware that I heard a story about a guy who was injured fighting a fire and the insurance company would not pay his workers comp because he was not trained in fire fighting. I always tell people that if you're on a major airport you've got trained professional ready to jump into their nice shiny red trucks to help out, so I reckon the most important thing to remember is the emergency phone numbers. I've got them programmed into my mobile phone.
