If you plan to turbo your 3.8 later, keep the optional breather. You can use it to vent your CCV side later when installing the turbo kit.
I think to keep them clean it should be every oil change but you get more oil than I do when I drain my catch can. That is the reason I will be moving it to where the battery is. I purchased an optima battery and have room to spare now and a catch can can easily. At first I was using an intake/TB cleaner but since I ran out I started using the CVC one and noticed the huge difference. After I let the car heat soak for about an hour and turn it on, thats when the white smoke shows up but its really thick white smoke versus the seafoam that it starts the fog right away. Thats why I think we should use the CVC GDI cleaner and two bottles. Really get the whole intake parts really wet. I will also using an Motul engine cleaner on the next oil change to remove all the junk that I hope the CVC is taking away. I wonder if they sell a small attachment for a shopvac because if you can soak the area and let it sit and brush it with either a hard toothbrush or some small brush it should be a quick process. It took me longer to collect the liquid collection since I knew all that was going to go directly to the piston.The CRC product is definitely more effective and easier to use than Seafoam, how effective it is just spraying it into the intake while the motor is running is hard to say but as you proved it does clean valve deposits. I plan to physically clean my valves and post some details on it when I finally get around to getting my intake manifold ported and balanced, at this point I have around 30,000 miles with the catch cans installed with engine treatments at each 10,000 mile increment so it'll be interesting to see how bad they are.
i figured its almost at the same level of the pcv and away from all heat sources mainly the exhaust and most important its easily accessible to drain and check ( the can i got has a dip stick in it).Looks good, ideally you want the can below the PCV valve but you are not the first to mount on the strut bar and it should work just fine, plus where you have it has the advantage of not being directly above or next to the exhaust manifolds.
Remember you only need the second vent side can if you track the car or go turbo, I fit neither of those criteria and I have yet to drain any oil from my vent side can so to do it over again I would only do the PCV can.
Gravity is your friend here.Is it okay if my catch can inlet is mounted higher than the PCV valve? I have a good spot for it with some of the old/reused brackets. Kind of in the same area, but higher up as I have more room with my CAI. Or is this one of those things where the inlet MUST to be lower than the source?