Apple Roof Cleaning (813) 655-8777 Report post Posted December 6, 2017 We use Mobil 1 synthetic oil for the gas engine AND the air compressor pump of our big Harbor Freight Air Compressor. Synthetic oil may be used in the compressor pump, unlike regular oil, so by using Synthetic Oil, we only have to carry one kind of oil. Share this post Link to post Share on other sites
Mr WALTER Report post Posted December 7, 2017 I believe Husky 16 oz will be good as your air compressor oil. Because it Reduces carbon buildup in your compressor valves. It is easy to mix with lubricants which make sure the longer life of your compressor. Thanks Share this post Link to post Share on other sites
