On my fist Jeep I used a medium sized fire extinguisher bottle tucked down behind a front fender under the hood. Not the biggest but it worked. I was just using the stock sanden a/c compressor with an inline oiler on the suction side and an oil separator on the pressure side to keep from burning up the pump.I've always been intrigued by the concept of using your bumper as an air tank. Unfortunately, my concern is putting a highly compressed tank as the first thing headed towards a rock seems unsettling.
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