No doubt it works but as I mentioned it's missing the basic concepts of separation which incidentally are almost universal in separating Oil/Water, Water from compressed air, Oil from compressed air, water from oil, water from jet fuel/turbine oil, diesel oil etc etc. I'm just saying if oil mist in a car motor can cause detonation then that crude separator is not capable of separating oil droplets from a gas stream with any efficiency and may likely in fact make shot gun blasts of oil droplets at times.
BTW those clear plastic bowls are typically Polycarbonate - known for being........ shall I say bullitproof? . I agree the Ind Filters are kind of ugly but then again the Mfgs make them out of SS, polished alum etc but they all have hefty pressure ratings that add weight. It's the principles of separation/coalescing that should be heeded.