What is the oiling system? Oil entrained in the compressed air?
From what I understand, and I am guessing from what I learned from another site that had a thread on the engine, but I believe it’s like an R/C car, or diesel engine in that the lubricant is in the fuel. So I guess it would be compressed air with some oil?
As I said, I may not be right, but I gleaned that from another site.