Air Compressor for Winterizing.

[Greybeard46]

This will be my first year needing to winterize my 337. Looking for guidance--pumping anti-freeze thru system or blowing it out with air pressure or both.
Also, if using air pressure, any particular specs for an air compressor? Does a 6 gal "pancake" compressor get the job done?
Thanks for your help.

[Pap and Mimi]

I like to blow mine "dry" then add RV antifreeze, running enough through each spigot to fill that P trap. The brass "air/water adapter" I have has a very small hole, so a pancake compressor should have no trouble keeping up with the flow. I set my air pressure at 30psi just to be safe, and open one valve at a time.
This is after I have drained and bypassed my water heater.