hey guys i havent found my answer on the topic forum so my problem is i have a 49 pickup which i have had for years all original except motor which is a 235 62 chevy motor,it has always seemed to have antifreeze loss thru the radiator overflow tube,i have changed all hoses new radiator,new water pump,several thermostats,new heater hoses,fresh antifreeze and it will still lose water whether summer or winter especially just sitting there idling and i have lowered the level in the radiator it still wants to come out the overflow tube i have given up until i met this web site can you give me a clue josie