Because refrigerants and refrigeration oils are miscible in one another, there will always be some oil that leaves the compressor with the refrigerant being circulated. Also, any time flooding or ...

Portable Model #315 pump/separators remove tramp oil and floating chips from coolant for up to 10 machine tool sumps, some as large as 400 gallon. These separators use permanent-oil separation ...

While everybody knows what the oil pump's job is and why it's there, few enthusiasts consider the lowly bubbler as a possible engine tuning resource. We've come to appreciate that it takes power to ...