I DIY a oil catch can myself and would like to share with those who like to do the same thing. I made a video on it and hope it help. Thanks

 

Good diy. I have one on my 2G TL and it collects a lot of oil. I've had it on for about 50k miles and it has kept the intake very clean. A few things though- I used the same harbor freight water separator. But I would use the brass fittings instead of plastic ones. Also, I would remove the filter that is inside. Instead, to catch the oil mist as it flows through, I put in a few stainless steel zip ties coiled up inside. Both the brass fittings and SS zip ties are at harbor freight too. Lastly, I took out the drain valve at the bottom and put in a same sized bolt with a nut and sealed it all off with black rtv

 

good idea. Thanks