When it comes to lubrication, there are two schools of thought: oiled and greased. Some run the system with an inline oiler and separator downstream. Others run a few ounces of motor oil and a separator. Both seem like a lot of hassle. Our fellow well-meaning but horribly misguided gearheads with lowered trucks on bags have had good success with greasing compressors and running them “dry” with no oiler or separator. Their cycle times are way more than ours will ever be, so we decided to give synthetic racing grease with a temperature rating as high as we could find a try.