Get a catch can before any mods.

[randeez]

mine spits oil under boost... however that may just be a result of pressurizing the crankcase via the manifold and forcing it out there. i may grab a 3 port and only use 2 for now...either way i need to get a check valve on the other

 

[HiHoeSilver]

mine spits oil under boost... however that may just be a result of pressurizing the crankcase via the manifold and forcing it out there. i may grab a 3 port and only use 2 for now...either way i need to get a check valve on the other

Added link to Dubs post. Good read.

 

[donjetman]

mine spits oil under boost... however that may just be a result of pressurizing the crankcase via the manifold and forcing it out there. i may grab a 3 port and only use 2 for now...either way i need to get a check valve on the other

Here's a 3 port https://www.amazon.com/dp/B07DZTGQ69/ref=sspa_dk_detail_1?psc=1
just add the ss pot scrubber

 

[randeez]

alright i'll throw something on the driver side to manifold with a check valve in it.
i grabbed somewhat of a bulk head fitting to put the passenger side back into the intake elbow. I was going to "filter" it in case positive pressure was forced out there still i dont want to shove it back in front of turbo.

 

[CHOO CHOO]

So I changed out my drain valve with the better, easier shut off valve. I didn't know that the catch can.com catch an was empty inside. I thought there would have been a filter of some sort.

 

[CHOO CHOO]

Yes and yes. I added a stainless scrubber pad to mine and it catches more.

I presume it's at the top then? I only took off the bottom to change the drain plug and it looked empty inside.

 

[08grey]

Mine is in the can. I used a copper chore boy scrubbie.

Sent from my SM-G973U1 using Tapatalk

 

[iamdub]

I presume it's at the top then? I only took off the bottom to change the drain plug and it looked empty inside.

Yeah. All the filtering/coalescing stuff (the "catch" part) is up top and the part you removed is the reservoir (the "can" part). There's a tube in the center with a cap on the end with about 8 holes in it. That cap unscrews, and there's filter media behind that. The oily mist goes into the top center of the assembly and passes downward through this filter media. The tiny oil droplets condense and collect to each other in the filter to fall out of suspension from the air, then they drip down into the can. The filtered air is sucked out through the outlet port in the side of the reservoir. I wrapped my scrubber pad around that center tube and stuffed it back into the can. It's a tight fit, but this holds the pad in place. You just have to make sure it's tucked it and not getting caught up in the threads as you screw the top back to the bottom. It sounds more difficult than it actually is. The scrubber pad basically acts as a second filter so the air is getting scrubbed twice. I'd say that it definitely improved the efficiency cuz I've consistently drained about 1 ounce more than the 2 ounces I consistently drained before.

 

[tst1212]

Just installed my catch can yesterday. Drove around 50-60 miles today, and opened it to see if it would show any signs of working. See attached.

 

[iamdub]

Just installed my catch can yesterday. Drove around 50-60 miles today, and opened it to see if it would show any signs of working. See attached.

View attachment 220076

That's a lot for only 50-60 miles. You should check into the other oil consumption measures, primarily the updated rocker cover. Also clean your intake manifold and do the GM upper engine cleaning procedure since you've obviously had a lot of oil going through it.

 

[CHOO CHOO]

I swear I never understand how some of you get such clear looking fluid. Mine looks like baby shit. Also seems like there is either water or something clear in it as well.

The last pics I posted of adding the shut off valve, was it sitting almost 10hrs. Not sure if mileage on the engine has anything to do with that.

 

[tst1212]

That's a lot for only 50-60 miles. You should check into the other oil consumption measures, primarily the updated rocker cover. Also clean your intake manifold and do the GM upper engine cleaning procedure since you've obviously had a lot of oil going through it.

Actually it's not that bad. The picture is a little misleading, as I turned the cup and it spread out a little. It's probably at most 1/2 a teaspoon, also I checked the mileage and it was closer to 90. If I continue at this pace, at around 5000 miles I should have around 3 oz. (12 tsp / 1 oz)

All that said, I do plan to keep an eye on it to get a better idea of what's going on.

Also, in response to the baby shit comment, I use full synthetic and Wix filters if that makes any difference.

 

[bottomline2000]

I swear I never understand how some of you get such clear looking fluid. Mine looks like baby shit. Also seems like there is either water or something clear in it as well.

The last pics I posted of adding the shut off valve, was it sitting almost 10hrs. Not sure if mileage on the engine has anything to do with that.

I think you are getting minimal loss through the PVC which means you probably have the updated valve cover. Not having more than excess fuel and vapor in the can would be a good thing..or you only drive it on short trips and the engine isn't heating up much.

Sent from my SM-G975U using Tapatalk

 

[iamdub]

Actually it's not that bad. The picture is a little misleading, as I turned the cup and it spread out a little. It's probably at most 1/2 a teaspoon, also I checked the mileage and it was closer to 90. If I continue at this pace, at around 5000 miles I should have around 3 oz. (12 tsp / 1 oz)

All that said, I do plan to keep an eye on it to get a better idea of what's going on.

Also, in response to the baby shit comment, I use full synthetic and Wix filters if that makes any difference.

3 ounces at 5,000 miles is exactly what I get and that seems to be about half of what most others get. This is also with my driving that includes plenty of WOT and high RPM. You're on the right track keeping an eye on it, though. The more visibility you have of what's going on inside your motor to catch things before they cause damage, the better. I as well use full syn and good filters. Usually WIX but went with K&N this last time since they're a quality filter and I didn't wanna go to another store just to get a filter. The K&N was internally identical to the Mobil1, but $3 cheaper and had the convenient nut on the bottom and cool windshield reminder decal.

 

[iamdub]

I swear I never understand how some of you get such clear looking fluid. Mine looks like baby shit. Also seems like there is either water or something clear in it as well.

The last pics I posted of adding the shut off valve, was it sitting almost 10hrs. Not sure if mileage on the engine has anything to do with that.

High humidity in your parts? Is it worse during the colder months? It's probably a temperature thing causing more condensation inside your engine (cold outside, hot inside). Short trips lead to moisture buildup as well and the drive times need to be longer during the colder months to burn off the moisture.

Somewhat related to mileage is the wear of the engine allowing more blowby which leads to more gasses in the crankcase to be vented out (which is the system the catch can is filtering). How many miles are on your rig?

 

[CHOO CHOO]

I think you are getting minimal loss through the PVC which means you probably have the updated valve cover. Not having more than excess fuel and vapor in the can would be a good thing..or you only drive it on short trips and the engine isn't heating up much.

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I never get alot in the can, but I only take short trips most of the time. 7miles to work and 7 back 4-5 times a week. Maybe the occasional 15 mile one way trip if we go out and about.

High humidity in your parts? Is it worse during the colder months? It's probably a temperature thing causing more condensation inside your engine (cold outside, hot inside). Short trips lead to moisture buildup as well and the drive times need to be longer during the colder months to burn off the moisture.

Somewhat related to mileage is the wear of the engine allowing more blowby which leads to more gasses in the crankcase to be vented out (which is the system the catch can is filtering). How many miles are on your rig?

High humidity up here in the Northeast. Summers are pretty nasty to most. I have 157k on the Tahoe.

 

[Tonyrodz]

I never get alot in the can

Oookkaayy

 

[iamdub]

I never get alot in the can, but I only take short trips most of the time. 7miles to work and 7 back 4-5 times a week. Maybe the occasional 15 mile one way trip if we go out and about.



High humidity up here in the Northeast. Summers are pretty nasty to most. I have 157k on the Tahoe.

I'd say these factors are the cause for the excess moisture in your PCV vapors. It's very humid down here as well. But I live where any drive is gonna be at least 15-20 miles one way. Just be glad it's not coolant! 157K isn't much and if it was maintained, should not be cause for enough wear to create excessive blow-by. Mine has 195K and I see no cause for concern about what the crankcase is venting.

 

[CHOO CHOO]

I'd say these factors are the cause for the excess moisture in your PCV vapors. It's very humid down here as well. But I live where any drive is gonna be at least 15-20 miles one way. Just be glad it's not coolant! 157K isn't much and if it was maintained, should not be cause for enough wear to create excessive blow-by. Mine has 195K and I see no cause for concern about what the crankcase is venting.

I'm not terrible on it. I get on it when we get a good snow, I do accelerate a little fast but not to the floor fast. I'll just chalk it up to what you say. Thanks dood..,...

 

[iamdub]

I'm not terrible on it. I get on it when we get a good snow, I do accelerate a little fast but not to the floor fast. I'll just chalk it up to what you say. Thanks dood..,...

More aggressive driving isn't really gonna make much of a difference with this. Well, unless you absolutely beat on it for most of every drive to get the engine and oil hotter, but then you're doing more damage to the motor than what that little bit of moisture ever will do. It's more of a time thing- you gotta run it long enough while hot to let the moisture steam out of the crankcase. So, unless you wanna start letting it idle for longer before and after your drives and taking the long way everywhere you go, you shouldn't worry about it.