New to catch can

So new to the world of catch cans.
Don't need them on my 2015 2500HD Silverado.

I have a 2012 GMC YUKON SLT and was told to install a catch can. It will be my daily driver and 4x4 driven when needed in the snow and or on some trips overlanding when called for.

Are they pretty much all created equal online or there are some bad ones out there?
Whats a trusted brand to go with that will do it's thing?

Thanks yall.

ABN45 said:

So new to the world of catch cans.
Don't need them on my 2015 2500HD Silverado.

Click to expand...

Second sentence will prove the first, after a few years.
Watch ...

ABN45 said:

I have a 2012 GMC YUKON SLT and was told to install a catch can (in 2024).
It will be my daily driver and 4x4 driven when needed in the snow and or on some trips overlanding when called for.
Are they pretty much all created equal online or there are some bad ones out there?
What's a trusted brand to go with that will do its thing?

Click to expand...

As catch cans are not technically endorsed by the CARB yet, it's caveat emptor, meaning, you do your due diligence.

To oversimplify, you do NOT want a straight easy path from the crankcase (back) to the combustion chamber.
The catch can has to make it easy for the vapors to sink, but difficult for the vapors to rise again,
so the vapors can condense and get ... CAUGHT.

So, will installing a oil catch can in a California registered vehicle cause issues with the biannual smog test?

opfor2 said:

So, will installing a oil catch can in a California registered vehicle cause issues with the biannual smog test?

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If it does - worst case - you know how y'all unplug the AFM / DFM disabler before you drive into the dealership ...
... unless they're not wet blankets over there?
Since the smog test mech-tech likely has the CARB monkey on his back,
maybe make the catch can as easy to uninstall, as to reinstall?

that's 2015 is direct injection right? google image of intake valves in a direct injection engine and decide if doing everything possible to keep oil out of the intake isn't a good idea.

ABN45 said:

So new to the world of catch cans.
Don't need them on my 2015 2500HD Silverado.

I have a 2012 GMC YUKON SLT and was told to install a catch can. It will be my daily driver and 4x4 driven when needed in the snow and or on some trips overlanding when called for.

Are they pretty much all created equal online or there are some bad ones out there?
Whats a trusted brand to go with that will do it's thing?

Thanks yall.

Click to expand...

All catch cans operate the same way, regardless of price. If you find one with a stop-**** drain at the bottom of the catch can, it will make the periodic draining of the catch can slightly easier (but not significantly easier). The more expensive catch cans may have better quality hoses that can better withstand the heat of the engine bay.

IMO, after using the catch can for a few years, I am definitely sold on the concept, and I remove about 1 fl. oz. of oil every 1000 miles of driving.

Another catch-can trick is to loosely pack some stainless steel scrubbing pad material into the empty void. This creates more surface area for the oil dropless to adhear to.

You should have the updated valve-cover design, and not have as much junk flowing through your PCV system to begin with.

I have '14 Tahoe with updated driver-side valve cover. I installed TWO catch-cans sequentially, and I'm catching and draining quite a bit every 500Mi. The second can has a glass bowl, and it gets fuzzy in few days of light driving, I take it off and clean with brake cleaner. I replace the stainless scrubbing pad filling every 6 months in both cans.
I had a chance to look at the intake internals, and it is wet there, not dry at all.
The engine does not consume any noticeable amount of oil during ~5K mi (8K Km) LOF intervals. My engine is FI, not DI, and I'd recommend anyone with DI to install the catch can on their GM vehicle. That's not Mazda DI design with (potentially) rotating valves and partial fuel spray on the valve.

I have no idea what a catch can does. My plugs always looked good when I changed at 50,000 mile intervals. My oil always looked good every 10,000 miles. Maybe I get better mileage with a catch can, maybe spark plugs last to 75,000 miles, which they probably would anyway. I have no clue, and even better, don't care. If I cared I wouldn't be driving a 6,000 pound truck.

Eighthtry said:

I have no idea what a catch can does. My plugs always looked good when I changed at 50,000 mile intervals. My oil always looked good every 10,000 miles. Maybe I get better mileage with a catch can, maybe spark plugs last to 75,000 miles, which they probably would anyway. I have no clue, and even better, don't care. If I cared I wouldn't be driving a 6,000 pound truck.

Click to expand...

Not much to do with spark plugs... The catch can catches oil mist flowing around in the
intake.. if it's excessive or above average it will coat the intake with engine oil
and then be introduced into the cylinder heads and valve. NO Oil in the intake is the
best, but a tiny bit is OK