[JRTJH]

I normally use my big compressor in the garage to winterize the trailer. It's a 33 gallon upright and does a fantastic job. We dry camp for deer season and I've done some "campsite quick winterize jobs" on the trailer during hunting season. I use the Champion generator and a Harbor Freight 3 gallon pancake compressor. It does run the entire time, but for the most part, manages to "keep up with the flow". If I get too "energetic" and rush from faucet to faucet, I may need to stop for a few minutes to let it catch up, but overall, if you consider the compressor's limitations, you'll do just fine with a small, 3 gallon pancake.