I want to remind everyone that 2.5 LB fire extinguishers are not good enough for your bug out vehicle. They are in fact a false sense of security. I had a few of them in the truck and they did almost no good in a real vehicle fire. SEE VIDEO of my buddy's Land Cruiser Burn to Nothing We all had 2.5 pound bottles and we could not stop it. Boy what a wake up call! I now say that you need at least two 5LB bottles. One for the driver and one for the passenger. More is better if you have room. 10 LB bottles are great too. I feel that 20 pound bottles are too heave to maneuver easily. More 5lb or 10lb bottles would be better. While we are at it. Make sure you look at the fuel system, especially the fuel lines. in older vehicles. Be careful out there!