can you give a link at product you ask about?anybody try this catch can separator from UPR products they say it drains back into crankcase and does both sides are they saying never have to enpty
Not sure I saw where they say you do not need to empty it. I saw them saying it was easy to remove and drain...
Ok, found it at ine of the pictures at tbe link above. It is not a catch can itself, but one of the optional items you can select.I’m not seeing where it says that it drains back into the crank case. Regardless, you don’t want that anyways. Oil that is caught in the catch can is diluted with gas vapor which breaks down the oil itself. It’s the same reason why these companies tell you to not pour the oil from the can back into the engine.
As far as letting oil back - I think oil in the engine goes through all these cycles anyways... including mixing with gas some gets out through vent system, but some stays.I’m not seeing where it says that it drains back into the crank case. Regardless, you don’t want that anyways. Oil that is caught in the catch can is diluted with gas vapor which breaks down the oil itself. It’s the same reason why these companies tell you to not pour the oil from the can back into the engine.
It is bad to let the oil back in. Hence why I said a lot of companies that make these products tell you to dispose of the oil and not pour it back in. Yes your engine oil does get gas vapors cycled through it normally but majority of the vapor is removed via the PCV. You can make your oil last longer if you have a good PCV system and don't reuse the oil that is captured.As far as letting oil back - I think oil in the engine goes through all these cycles anyways... including mixing with gas some gets out through vent system, but some stays.
So I do not think it's so bad to let oil back on.