I must disagree with you on this John. You say the air valve is to keep water in the fuel system from freezing? Well if there is enough water in the system to freeze, you have a bigger problem anyways. And when the car sits out in the cold without running, it will freeze with or without the valve because the car isn't running. Water in the fuel system has nothing to do with this. And about running the car in extremely cold climates... Here in MN, I have driven my DeLorean in temperatures in the lower teens. I HAVE removed my hot air valve. But I noticed no difference in the warmup time with or without the air valve. Takes about 4 times longer to heat up than my Talon, but I dont care. (We're tough with the cold here in MN). And completely off topic, but I would be still driving my DeLorean now, if we didn't have the one snowstorm a month ago. There still is some leftover salt, and there hasn't been any rain to wash it away. Jim Reeve MNDMC - Minnesota DeLorean Club DMC-6960 --- In dmcnews@xxxx, dherv10@xxxx wrote: >Your also correct in certain parts of the > country and in certain weather conditions > ( Freezing ) the air flow valve is necessary to keep the water in the fuel > system from freezing. But, as I understand it, most of the cars in sub > freezing weather are in storage due to not wanting to get the car in a > potential accident and salt on the roads.