Bought one today, and got my pen light to have a look up inside it through the drain hole...only to discover that they're hollow! Just a tin basically.
Since these items are recirculating, how are they suppose to stop the vapours recirculating as well? No fins etc to condense the oil vapours.
I will be taking it back tomorrow and will be investing in a cusco one or one of similar quality. Are there any good recirculating catch cans on the market? A breathing one is my last resort.
I should have known better...
Regards,
Scott