7 year old Craftsman 26 gallon 1.6 HP 160 PSI Air Compressor loses about 40 PSI of pressure a day.

Craftsman 26 gallon 1.6 HP 160 PSI air compressor

Why does a 7 year old Craftsman 26 gallon 1.6 HP 160 PSI air compressor lose about 40 PSI of…