I doubt any catch can will ever be 100% effective at capturing all the oil vapor. A larger can & screen element might perform better, but every can will get to a saturation point after x amount of hours of operation.
I still applaud those who are working on an improved design. Sent from AutoGuide.com Free App
I agree that it's doubtful that any can be made to be 100% effective but some work better than others. I know that the other brand of can that I usually have on the car doesn't leave oil like I show in the above pics. It just shows a very small trace but nothing obvious.
I had an opportunity to test one of UPR's new diffusers on a fairly long vacation trip and is why I switched out cans.
My fiancée still runs a UPR can on her 07GT and she doesn't want to buy another can so I'm hoping UPR's continued improvements will benefit her as well.
2014 GT, Sterling Gray, base model, Automatic
GT500 AB, GT500 OTA pipes
Bob's oil catch can
Ford aluminum finned diff. cover
Ford all weather floor mats
Ford trunk liner and cargo net
Ford locking gas filler plug and wheel locks