Catch can worth it?

[Zpak]

Case closed! For any doubters or people on the fence about buying a catch can this is about 1,200 miles since last empty. I’m assuming the cooler weather has been a factor to increased volume of nastiness not pumped back into my engine. I usually do it at 3k oil change intervals but I was starting to smell it so I knew it was time.

 

[EcoBoostSHO]

View attachment 11349 Case closed! For any doubters or people on the fence about buying a catch can this is about 1,200 miles since last empty. I’m assuming the cooler weather has been a factor to increased volume of nastiness not pumped back into my engine. I usually do it at 3k oil change intervals but I was starting to smell it so I knew it was time.

That's a lot! Which can are you using?

Sent from my Pixel 3 XL using Tapatalk

 

[Zpak]

UPR Dual valve catch can.

 

[DARTHSHO]

Next mod I think I’m going to do on mine since I just changed the oil

 

[SHOdded]

How's it lookin inside the intercooler?

 

[Zpak]

How's it lookin inside the intercooler?

little oily actually

 

[SM105K]

Every 3k miles.

 

[76FoMoCo]

so I have the lms can and I don't see seet on a 2013
wtf am I missing besides the smelly hoses ?

 

[b4black]

Most of what you are seeing in those pictures is water. No value in catching water (which was vapor until the catch can condensed it out). Catching oil - yes, water - no.

Actually, if anything, water vapor would help remove intake valve deposits.

 

[SM105K]

Welcome...mine is oil. Always has been.

 

[b4black]

Welcome...mine is oil. Always has been. View attachment 11359

Your first picture above is about 80% water and 20% oil.

 

[SM105K]

Your first picture above is about 80% water and 20% oil.

You clearly don't know what you are talking about. Your numbers are mixed. It is 80% oil and 20% other liquid. I know, I pull it out of my UPR catch can every 3K miles.

 

[JRV1631]

Always been black

 

[Zpak]

 

[b4black]

You clearly don't know what you are talking about. Your numbers are mixed. It is 80% oil and 20% other liquid. I know, I pull it out of my UPR catch can every 3K miles.

You're right, I got them backwards. Oil floats on water. The colors threw me off. My oil is black. Just like JRV1631's above (although in the winter, it's more milky looking with water).

Any thoughts as to why your 'oil' is so light? Could it be fuel dilution? And why you seem to have so much more?

 

[SM105K]

You're right, I got them backwards. Oil floats on water. The colors threw me off. My oil is black. Just like JRV1631's above (although in the winter, it's more milky looking with water).

I thoughts as to why your 'oil' is so light? Could it be fuel dilution? And why you seem to have so much more?

The oil that comes out of my catch can is always dark and always smells like fuel.

 

[stripSHO]

You're right, I got them backwards. Oil floats on water. The colors threw me off. My oil is black. Just like JRV1631's above (although in the winter, it's more milky looking with water).

I thoughts as to why your 'oil' is so light? Could it be fuel dilution? And why you seem to have so much more?

Right, oil floats on water, so your 80/20 water/oil for the first pic would be correct if that's oil and water in the bottle. But I'm also curious why Zpak's engine appears to be breathing chocolate milk and beer

 

[Zpak]

The original picture had most the oil and milky foam spilled off before the rest made it to the bottle. This was the fist time I saw so much liquid. Like I said, I’m assuming because probably a good 500 or more miles of the 1,200 were driven in under 20° F weather. I’m not sure why, previously vapor or not, you’d want that sucked into the combustion chamber.

 

[b4black]

I’m not sure why, previously vapor or not, you’d want that sucked into the combustion chamber.

You wouldn't want to suck liquid water into the engine, but it was a vapor before the catch can condensed it out. That tiny amount of water vapor (without a catch can) wouldn't hurt anything.

But I'm also curious why Zpak's engine appears to be breathing chocolate milk and beer

The "chocolate milk" is the oil layer. It's actually an oil and water 'emulsion'. Just like when someone blows a headgasket and their oil looks milky. The 'beer' is just dirty water.

 

[SHOdded]

Engine design is a compromise between what the manufacturer wants to deliver and what the law says they are allowed to deliver. Otherwise, we'd all be running around with breathers on the valve covers (if that) instead of these complicated PCV systems.