I work with a guy that says his R22 Racks are running to high a head pressure Set points are 225psig. He says the boss wants these pressures to reduce the amount of refrigerant needed in the system. He says that the mineral oil is waxing and causing alot of problems and if he does an oil change and convert to Alkabenzine he will run lower head pressures and have fewer problems! Any opinions on this and the pros and cons on using one or the other would be greatly appreciated. Any literature addressing this?