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Airlift 5000s have been on my 2007 Duramax since the day I bought the truck. On board compressor with analog gauge..
I have "never heard" of winterzing air lift 5000s.. I live in Idaho and the truck has been through 17 hard winters with temps below zero.. never an issue.. I run 25 psi empty and 55 psi loaded with the fiver
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