Finn,
You'll be all set to air up your Avenger, with what's included with your Yong Heng, except for oil. I'm a follower of the wisdom of Biohazardman and a year ago he recommended Husky brand Full Synthetic air compressor oil. Our Yong Hengs take 10 ounces. Recently, SecoLube 500 from Filtertech, is recognized as the more appropriate oil for our "dive" compressors, as it has a 520 degree flash point versus the 460 degree flash point of the Husky Synthetic. Just changed my one hour break-in oil, to the Husky Full Synthetic, but will change to SecoLube 500 at next oil change, 10 months from now. You'll need to get some oil, SecoLube 500 might be too pricey for one hour break-in, but it's up to you. WM