Catch Cans

[1DIRTYH3]

I know that some of you have put catch cans on your trucks. I was reading up on them and realized there importance for long term performance & engine life.
Anyone have a catch can they like or suggest and where did you mount it?

 

[Panzer07]

IMHO a $40-60 one would just as good as a $400-600 can...as long as it can hold a quarter and it has a way to show u the lvl of it you should be fine. I picked mine up from amazon I belive I payed $40+, I went to autos hope and bought some better hose for extra couple bucks just cause the one it came was too flexible not biggie since what I care and want was the can....and fuera close to 2 years it has held good

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[4speedfunk]

This seems to be a common mod, and much like electric fans...I think it's a band aid fix for a completely different problem.
Some H3s seem to burn off oil. Some H3s seem to run hot. I don't pretend to know the real solution but, catch cans and e-fans are not a fix. They merely make an issue more tolerable. If you're cool with that then I don't see the harm. Thank god my H3 doesn't exhibit either of these problems...not sure I could quit digging until I found the true source of the problem.

 

[cbetts]

I would agree with 4speed except I have seen this on every i5, even Colorados. This engine has a lot of blow-by, especially at high RPMs. Combine that with steep hills and you will get oil in the blow-by. My truck has had this issue since day one. I reported to the dealership on several occasions. I even did my own compression test which showed fine. It just happens to be a quirk of this engine. I have not seen this on the Alphas.

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[cgalpha08]

If you check other Gm forums, there are massive threads debating catch cans. If you have the time to read them, might be worth it. But I'm talking hundreds of pages lol

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[1DIRTYH3]

That's what got me started! Lol...
Most suggest expensive ones, but the important points seem to be baffling with stainless steel screening to prevent oil from going back into system. I was a bit lazy and hoped someone else did the leg work.

 

[cbetts]

I have been running a catch can for only a couple thousand miles. It doesn't appear to be catching much yet. I need to run a full oil change cycle to see if I actually catch what I am losing between changes. I have clear lines on my catch can and both input and output are oily which tells me oil is getting past. I am trying to be optimistic until I change my oil and know for sure.

 

[1DIRTYH3]

Does your catch can have screening or baffle?

 

[1DIRTYH3]

When you can post a picture of your set up it would be appreciated [emoji106]

 

[cbetts]

When you can post a picture of your set up it would be appreciated [emoji106]

As per your request . . .

 

[alrock]

I bought one for my DD and then decided not to put it on. Yes, there's a lot of blowby, but the truck's also been fine with a lot of blowby for a long time. I tend to use up oil in long, high strain situations like long mountain climbs and off road in low gear. Reading a few threads some people have installed the lines backwards and caused oil leaks.

I guess where I stand now is that it's fixing a problem that's not really a problem. I'm comfortable with some oil getting into the intake.

I think cbett's real issue is that his air horns scare :eek the oil out of the pan and into the intake and catch can.