These are notorious for leaking into the cab. Anyone that has had one for a while can verify that. So, if you have a firewall pad and carpet you may not even notice it leaking into the cab. That stuff will soak up the fluid. You will have to look under the dash and feel around to see if anything is wet. If it has been leaking into the cab then you will also want to pull any padding and carpeting and clean thorougly. Brake fluid will help stuff rust in fine fashion.
