Still Not Sold On A Catch Can? Check Here...

['17 Sierra]

9 hours ago, Grumpy Bear said:

So we're draining a cup of 'oil' from these cans every thousand miles or so and yet we are not showing a loss on the dipstick? 

That's a neat trick.  If you're old enough to have worked on motors with draft tubes and carburetors you still saw intake runners fouled if you given them enough miles. Sooner if worked hard. 

Combustion byproducts replace some of the oil that’s used and every engine burns some oil. The catch can catches more than just oil too. Depending on where you have it mounted will dictate whether or not you’ll catch some condensation but with DI engines, you’ll have some raw fuel that makes it past the rings. That will end up in the catch can as well.

[Grumpy Bear]

2 hours ago, '17 Sierra said:

Combustion byproducts replace some of the oil that’s used and every engine burns some oil. The catch can catches more than just oil too. Depending on where you have it mounted will dictate whether or not you’ll catch some condensation but with DI engines, you’ll have some raw fuel that makes it past the rings. That will end up in the catch can as well.

So by 5,000 miles my six quart oil sump is four quarts oil, a quart of water and a quart of fuel? 

 

Here's a marketing axiom for ya. "Create a fear. Create a product. Create a fortune". Good lord. 

[KARNUT]

My first DI vehicle is at 80K and 7 years mostly in town driven by the wife. No catch can runs great same spark plugs.


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[diyer2]

10 hours ago, Grumpy Bear said:

So by 5,000 miles my six quart oil sump is four quarts oil, a quart of water and a quart of fuel? 

 

Here's a marketing axiom for ya. "Create a fear. Create a product. Create a fortune". Good lord. 

If I had a DI engine I would not  install a catch can.

Personal choice like so many things in life.

[Sierra706]

Prior to my truck I had a 2006 vw Passat 2.0T that got a walnut shell cleaning at 110k. Never looked at the valves myself but I trusted my mechanic. It had a slight improvement. But those motors were also notorious for fouling problems. Turbocharging didn’t help.


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['17 Sierra]

7 hours ago, diyer2 said:

If I had a DI engine I would not  install a catch can.

Personal choice like so many things in life.

I put one on and my thinking is that you won’t hurt anything by putting one on but everything to gain if all the hype is true. I’d like to see a comparison done with two identical engines, one with and one without a catch can driven for 50,000+ miles.

17 hours ago, Grumpy Bear said:

So by 5,000 miles my six quart oil sump is four quarts oil, a quart of water and a quart of fuel? 

 

Here's a marketing axiom for ya. "Create a fear. Create a product. Create a fortune". Good lord. 

Key word; “Some” oil is replaced.

[arkenzo]

Still not sold.

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[L86 All Terrain]

Had my intake tube off not long ago to switch to a CAI and there wasn't a single drop of oil in the tube or in the throttle body?

[Orlando8]

1 hour ago, 10SierraA.T. said:

Had my intake tube off not long ago to switch to a CAI and there wasn't a single drop of oil in the tube or in the throttle body?

mine either.........

[mookdoc6]

18 hours ago, Orlando8 said:

mine either.........

40K with Catch Can Elite....Just checked the other day.  Bone dry no oil not even a hint!  Not sure what it would look like without a catch can though?

[Gotsumpnferya]

How much of benefit a catch can provides is evident every time I change the oil .

Will it help longevity ? Time will tell .

I'd much rather separate and drain the contaminants than let them coat the intake system .

[chris-i]

I was told by someone a catch can will void warranty? I havent called my dealer to ask them. Anyone heard that as well?

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[USCGRetiredJosh]

1 hour ago, chris-i said:

I was told by someone a catch can will void warranty? I havent called my dealer to ask them. Anyone heard that as well?

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A month and a half ago, I lost acceleration in my truck and the engine started ticking. So I tried to figure out why. Was it bad gas? Nope. I added a catch can and got a couple of tablespoons the first trip to and from work one day. Changed igniters the other day, nope still have issues. Took truck to the dealership today and they are replacing several cams and lifters under warranty. The never said anything about the catch can.

 

2015 Sierra 5.3 

49,000 miles

[yamaha0343]

I've owned vehicles from Ford, Chevy, Dodge, Jeep, Nissan, and Toyota. I've joined a bunch of forums. 

 

They all have one thing in common: Catch can threads.

 

Going by that logic, every vehicle needs one. But, I'd wager that less than 1% of vehicles on the road have one. 

[STINSAN3]

I would like to get one, knowing I'm gonna keep my truck for  awhile. 
While having a piece of mind that its gonna last a good while too. Plan to keep it 4-7 years.
I want my 6.2L feeling good.