2003 DODGE SPRINTER Power Trainautomatic Transmission Problems

THIS STUFF IS DANGEROUS. I'VE LOST THREE TIRE VALVES IN LESS THAN 1000 MILES AND THE LAST WAS SUDDEN AND VIOLENT. HONESTLY, I THOUGHT I'D DONE SOMETHING WRONG, BUT I'VE USED ONLY MR. CLEAN WASH SYSTEM AND A VERY DILUTE DEGREASER ON THE WHEELS. IT WAS DIFFICULT TO TRY TO REMOVE THE STEMS WITHOUT FURTHER DAMAGING THE VALVES AT DISCOUNT BUT WE PERFOMRED A LITTLE EXPERIMENT BEFORE DISSEMBLING THE TIRE. WE RAN THE PSI UP TO 80 OFF THE VEHICLE AND WATCHED WHERE THE AIR ESCAPED THE VALVE. THERE IS A RUBBER COLLER THAT RUNS ABOUT 1/2 UP THE METAL VALVE STEM. THE AIR LEAKS FROM THE CIRCUMFERENCE OF THE SEAL WHERE THE RUBBER ENDS AND METAL BEGINS. HOWEVER, ANY SLIGHT PRESSURE OFF-CENTER RESULTS IN AIRFLOW FROM THE JUNCTION OF THE VALVE AND RIM. FURTHER PRESSURE EMPTIES THE TIRE PRETTY QUICK. THE FIRST TWO LEAKS WERE DISCOVERED HISSING IN PARKING...