Catch Can 2024 2500 HD

BCGM · March 1

As you know I have the Chevrolet 2500 HD 6.6 Gas engine and I did see a thread regarding catch cans for the 6.6 gas engines

Could someone provide the link to that thread as I have some questions regarding it

Thank you

Another JR · March 1

Here’s one

Capt Bob · March 1

All you want to know about catch cans. Page 6 has latest threads about the 6.6L

Cheekster96 · March 2

2020-2025 Silverado and Sierra 2500 3500 Oil Catch Can

This is what I put on my 2022 HD. I have the black anodized one. I mounted mine in the auxiliary battery tray. Inverted the included attachment bracket so the can sits a little higher, making it easier to reach. Up here in Northern Maine in the winter, I empty it every other week. Summer months, it does not accumulate much.

Lee

lineman1234 · March 2

21 hours ago, BCGM said:

As you know I have the Chevrolet 2500 HD 6.6 Gas engine and I did see a thread regarding catch cans for the 6.6 gas engines

Could someone provide the link to that thread as I have some questions regarding it

Thank you

PM me if you wish and your questions......................

Another JR · March 2

My trying to help you with your search should not be construed as me advocating for installation of a vapor condenser in the crankcase ventilation system. Personally I don’t think it’s necessary, but that’s just an opinion. I do not claim any specialized expertise on this. I have chosen not to install a “catch can” on my truck.

Edited March 2 by Another JR

bruceb58 · March 2

The design of the crankcase ventilation system on the 6.6L pretty much eliminates the need for a catch can. All you are going to get is water in them so I see zero reason to put one one.

lineman1234 · March 3

2 hours ago, bruceb58 said:

The design of the crankcase ventilation system on the 6.6L pretty much eliminates the need for a catch can. All you are going to get is water in them so I see zero reason to put one one.

And stuffffffff..................

lineman1234 · March 3

Is the catch can needed on the 6.6 gasser, no, does it catch ( some ) stuff between the pcv valve going to the drivers side valve cover, yes, water, oil vapor, unburnt gas, burnt gas that just goes back into the oil like normal.

It really is good for sucking out ( some ) moisture before its burnt off anyway, so great for short trips.

I came across an article by GM a wile ago explaining the valve covers designed for the L8T motor, quite interesting and designed to NOT let any oily vapors into the intake. Its easy to pop off the intake hose going between the passengers valve cover and intake and look how clean it is, or is on mine.

The first pic is winter in upper MN 44 mile drive, fresh oil change, can was empty and wiped clean, it took out that much water. So really good for winter use, dont catch as much water vaper in the summer.

Again, is it needed,,, no, does it do something, yes, its not that expensive and easy to install or remove.

Would i install it again, yep, will i ever remove it, nope.

The next pics are of the intake to valve cover tube wiped inside tube and connecting points with the Q-tips, notice clean going from the valve cover to intake.

bruceb58 · March 3

Looks like condensation...as expected. That burns off with no issue and actually is a good thing. I will not install.

The 6.6L has baffles in the valve cover that reduces oil mist.

Edited March 3 by bruceb58

lineman1234 · March 3

This is a pic of about 4500 miles, i used a small milk jug when in the mood to check and empty the can, the other pic is a 10oz cup i pored it into.

Oil on top, water oil fuel burnt and not burnt middle and sludge on the bottom.

Edited March 3 by lineman1234

AndrewF · March 3

I just installed one as well. I feel it falls under the upgrade category of not required as there are plenty of vehicles that run without them but should help to some extent. Just like I change the engine oil and all other fluids before the listed service intervals on all of my vehicles. Again technically not required but if something does go wrong I know it wasn't because of my lack of maintenance.

Edited March 3 by AndrewF

Cheekster96 · March 3

Another JR · March 3

21 hours ago, lineman1234 said:

This is a pic of about 4500 miles, i used a small milk jug when in the mood to check and empty the can, the other pic is a 10oz cup i pored it into.

Oil on top, water oil fuel burnt and not burnt middle and sludge on the bottom.

That looks like a 1 quart jug. So maybe around 4-5 oz of fluid?

lineman1234 · March 7

As i did an oil check and catch can check yesterday. I hadnt check either since my last travel day north towing the 5ver. So 8 days. The can was almost full of the normal oily tan water mix. Fullest i have seen it so far. I should have take a pic but i was so surprised, i just dumped it and put it back on.

So the best time for it/the can to do something seems to be colder weather as it sucks out moisture. Colder being very, very upper Minnesota weather. Summer very little moisture but oil vapor from pcv valve adds up at the bottom of the can.

The moisture burns off at some point anyway, without a can, but dumping a good cup of water stuff before it burns off cant be a bad thing.