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Oil Catch Can. Yes or No?

Do you have a catch can?


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    44

Doc

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After my catch can install, if that thing fills up frequently, ill add one of these and see if there is any difference!
I put a sock over mine because it tends to mist a bit. I change the sock every other oil change, beats buying their new filters..:)
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Dr3wDrop

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I put a sock over mine because it tends to mist a bit. I change the sock every other oil change, beats buying their new filters..:)
Anyone ever complain about a feet smell inside the truck ?
 

HTX1811

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After roughly two full years, I have filled my 750ml bottle with the crap from my catch can. Obviously most of it is water. So… now what lol

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Get a new bottle????

I put a catch can on last week. 400 miles later and I poured this out. Only 400 miles.

Catch can.jpeg


Catch can 2.jpeg
 

Dr3wDrop

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Got this guy installed. It will be interesting to see how it works. There is a little plastic ball inside the housing that seats flat when the valve is straight up and down. The ranger cap is at a very very slight angle so hopefully the ball will stay seated correctly. Stole one of my wife’s socks to cover the filter from other comments on here.

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Side note, checked the oil and it was past the hatch marks to the top hole. Smelled like fuel still and the inside of the oem cap had a little milky residue. Oil change was done 600 miles ago and it was at the halfway point in the hash area right after the oil change.

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Figured I would re-post this here. Ended up ordering the crank case breather and stuck it on. Still plan on installing my UPR CC when the weather warms up.

Also found this thread below. Maybe it will help with the amount of condensation the catch can catches?

https://www.ranger5g.com/forum/thre...der-hard-acceleration.5486/page-3#post-374847
 


rbenne17

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Figured I would re-post this here. Ended up ordering the crank case breather and stuck it on. Still plan on installing my UPR CC when the weather warms up.

Also found this thread below. Maybe it will help with the amount of condensation the catch can catches?

https://www.ranger5g.com/forum/thre...der-hard-acceleration.5486/page-3#post-374847
Get a new bottle????

I put a catch can on last week. 400 miles later and I poured this out. Only 400 miles.

Catch can.jpeg


Catch can 2.jpeg
All this catch-can talk has got me thinking. Why do we want to CATCH the blow by gas/oil/water mixture and have to worry about emptying it? Why not just vent it straight to the pavement going down the road? It's mostly water anyway. The amount of oil contained in the mixture is minute compared to the amount that vehicles regularly LEAK while driving down the road. Then just plug the inlet line that fed this crap to the top of the valves causing the carbon build-up. It seems to me that would produce a much cleaner fuel/air/burn mixture without mixing in those unwanted contaminants. What kind of warning light would I trigger if I did this you think?
 

66F100

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I used the CRC GDI cleaner every other oil change on my two Ecoboost Mustangs, never got around to snaking my bore scope down into the intake to take a look at the valves to see how good it was doing. Did see a YouTube video where some took pictures before and after and it made a very noticeable improvement. The engine had a lot of build up and based on the video I would think if you start using it early and do it regularly it would keep build up at bay.

FWIW, CRC has been around since the 40s and has always been a very reputable company with solid products. I have a soft spot for them because when I was an incoming freshman engineering student they provided all the engineering students with a copy of their engineering math tables and a copy of the mechanical engineers handbook. For a broke college student that was pretty significant.
I have always had great experience with their products. Their brake clean is the best. I plan to use there GDI cleaner at my next oil change and at every one after.
 

66F100

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All this catch-can talk has got me thinking. Why do we want to CATCH the blow by gas/oil/water mixture and have to worry about emptying it? Why not just vent it straight to the pavement going down the road? It's mostly water anyway. The amount of oil contained in the mixture is minute compared to the amount that vehicles regularly LEAK while driving down the road. Then just plug the inlet line that fed this crap to the top of the valves causing the carbon build-up. It seems to me that would produce a much cleaner fuel/air/burn mixture without mixing in those unwanted contaminants. What kind of warning light would I trigger if I did this you think?
The EPA would never allow an automotive manufacturer to design a system that intentionally leaked oil and fuel onto the ground, no matter how small the amount. Aftermarket companies wouldn't be allowed to do this either, they would be fined very quickly and/or shutdown.
 

rbenne17

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The EPA would never allow an automotive manufacturer to design a system that intentionally leaked oil and fuel onto the ground, no matter how small the amount. Aftermarket companies wouldn't be allowed to do this either, they would be fined very quickly and/or shutdown.
Justin, I completely understand and agree. You may have missed my point. What I commented on was making modifications to my OWN 2021 Ford Ranger and not what a manufacturer is allowed or not allowed to do. Why do I need to purchase a $200 catch can kit that needs emptying on a regular basis when I can vent it directly to the pavement, was my point. Like I said, the miniscule amount of oil I'd be discharging on the road would be negligible when compared to the amount that leaks every day out of poorly maintained vehicles. My question was would I cause any warning lights by doing it?
 

HTX1811

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All this catch-can talk has got me thinking. Why do we want to CATCH the blow by gas/oil/water mixture and have to worry about emptying it? Why not just vent it straight to the pavement going down the road? It's mostly water anyway. The amount of oil contained in the mixture is minute compared to the amount that vehicles regularly LEAK while driving down the road. Then just plug the inlet line that fed this crap to the top of the valves causing the carbon build-up. It seems to me that would produce a much cleaner fuel/air/burn mixture without mixing in those unwanted contaminants. What kind of warning light would I trigger if I did this you think?
I’m no engineer but does the pressure make any difference? If you vent it to the ground, that air pressure is no longer in the closed system. I dunno if that even makes sense but it’s the only way I can convey my thoughts on it.
 

Dr3wDrop

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Why do I need to purchase a $200 catch can kit that needs emptying on a regular basis when I can vent it directly to the pavement, was my point. Like I said, the miniscule amount of oil I'd be discharging on the road would be negligible when compared to the amount that leaks every day out of poorly maintained vehicles. My question was would I cause any warning lights by doing it?
I asked UPR if I could install a drain tube on their CC and leave the drain tube open instead of closed and they said it would create a vacuum leak.
 

rbenne17

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I’m no engineer but does the pressure make any difference? If you vent it to the ground, that air pressure is no longer in the closed system. I dunno if that even makes sense but it’s the only way I can convey my thoughts on it.
My thinking is when the piston goes down it creates the vacuum needed to draw air and fuel into the cylinder along with the contaminates we don't want that cause the carbon build-up. If I plug the top inlet to stop the crap from being sucked in, will they still be discharged through the lower outlet without vacuum? THAT, I don't know.
 

Dr3wDrop

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Checked the sock on my crank case breather. It was a little wet to the touch and smelled like fuel. There was a little spittle around it where you can see its pushing through the thin sock. Gonna switch to a sweat band and see if that helps.

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Racket

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Checked the sock on my crank case breather. It was a little wet to the touch and smelled like fuel. There was a little spittle around it where you can see its pushing through the thin sock. Gonna switch to a sweat band and see if that helps.

7510451D-C4DB-4B0D-AF3A-C02520271026.jpeg
So many angsty teen memes to draw on.... 'how many times have I told you not to touch my socks, Mom!'
 

Dgc333

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Justin, I completely understand and agree. You may have missed my point. What I commented on was making modifications to my OWN 2021 Ford Ranger and not what a manufacturer is allowed or not allowed to do. Why do I need to purchase a $200 catch can kit that needs emptying on a regular basis when I can vent it directly to the pavement, was my point. Like I said, the miniscule amount of oil I'd be discharging on the road would be negligible when compared to the amount that leaks every day out of poorly maintained vehicles. My question was would I cause any warning lights by doing it?
Absolutely you would trip a CEL, even disconnecting the clean side vent will trip a CEL
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