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It would be best to put the catch can collection into your used oil container for recycling.
If your kitchen sink goes into a septic tank, not only is down the drain not good for the environment, it is not good for the bacteria in the septic tank that is breaking down the sewage before it goes into the leach bed.
If it goes to the municipal sewer.....same for the bacteria in their system......and on into the water system that it drains into.
I DO like the idea of the larger catch can......a large container provides a larger "dead" air space....which is going to lead to a greater opportunity for the vapors to condense and settle into the bottom for collection.
I used a Greddy catch can, and a long run of vaccum hose.
Located the can away from the hot engine....and both vaccum lines have a down-hill slope to the catch can.
I do not get much in the catch can in the summer, but in the winter it gets a good bit.
I use Redline oil, which has a lower evaporation rate.
I have also noticed, since the catch can installation and the switch to Redline (2 changes at about the same time), that I now have no slight amount of oil coming out of the throttle body.
My particular engine has the PCV line come in real close to the throttle body....and is prone to have oil come out the throttle body.....just a small amount...but it was annoying.
Engine has always used very little oil.
