Come to a smoke check station this morning and they reject my smoke check because of Oil Catch Can i

Because clearly keeping sooty oil out of the combustion process would create more not less air pollution, right? Lol... I mean they are "start certified" right? They obviously know way more about preventing air pollution than us oil catch canners, right?

 

Catch cans are illegal in California. But you probably won't have issue finding a smog check station that will pass you.

 

I don’t think the catch can is worth the effort. Next thing you know it gets clogged (during winter) and there you have it

 

There's a label on the box of my Moroso 85474 (actually have two in series), saying something to the effect that it's not street-legal. Which must rankle the manufacturers; it's a sealed system, no breather, and all it does is collect crud that otherwise will end up in your intake manifold and/or combustion chambers.

 

Our winters here in California is very mild, unless your in the mountains. So a catch can out here wouldn't freeze-up and clog.

Pretty much any non-OEM equipment attached to the engine, will get you a failing mark out here.

 

Photo and description of catch can mmm please?

 

Clogging of pcv system is whole lot more bigger problem in automobile industry than the tiny bit of engine oil going to intake. Recalls, damaged engines due to engine oils blown out etc. Many cars have electrically heated systems to avoid clogging. I think one of the most common towing reason here up north is clogged pcv.. Repair is often easy: few hours in warm garage

 

A tiny bit of oil going into the intake is a huge issue on Prius

 

Reaction was your occ clogged comment

 

Here is a decent video on oil catch cans by one of the better engineers on youtube. On gen3 Prii, Direct Injection is not the problem since the car is Port Injection. However these engines have flawed piston rings, bad egr design and a poor pcv setup. As a result the intake manifold fills up with oil and other liquids which may well contribute to the head gasket crisis. The key to a catch can is having one that effectively captures the liquid. Most don't. And having an owner that empties it. Most won't.

Interesting tidbit, the newest Toyota hybrid max system has a catch can built into the intake manifold. Plus the engine does not have an egr. Not sure how it drains but other manufacturers have an automatic drain to the crankcase.

 

Every combustion engine car has pcv and tiny bit of oil going in. Maybe 1% of the Prius oil consumption is due to pcv. I wish it was much more because then i would immediately install three OCC’s in series