Definitely use the metal valve stems even if you don't have a tire pressure system. It is doubly important to use them with a tire pressure system. The extra weight on the end of the stem will do a job on the rubber ones otherwise..
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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