Original World War 2 business industry trade magazine vintage ad for THE FULTON SYLPHON COMPANY of Knoxville, TN.  This is a War of Temperatures.  From the biggest tank to the little but scrappy Jeep, American fighting machines have that same get up and go , in any climate, that we have learned to expect in modern motor cars.  Sylphon Engine Thermostats.  Old 1943 WW2 era propaganda magazine advertisement.