Hey Old Sub. Sealing the leaks does help. I'm in Brentwood Bay, and drive my 1950 1 Ton all the time. I've got the fresh air heater, it, and the rad, etc, are clean. Even on high, with a leak proof cab, it still needs help. The worst of it occurs when I'm wet from the rain, and get in and drive, as I'm sure that's the case for you. I always keep a small shower squeegee in there for the side and rear windows. Just last week though, I put a crappy plastic dash fan in, the kind you get at walmart for $15. It oscillates, and keeps the windows clear. It does take up alot or real estate in there. I'm currently waiting on an old Trico Vacuum fan to replace the plastic one. It's one of those ones you see in Model T's. At any rate. When I was driving my old Land Rover, I was also having the same problem. I went to Princess Auto, and got a 30,000 BTU bus heater. That pretty much solved all the heat problems-it was uninsulated, an I was living in Calgary. Oh, look at me ramble on and on.
