Oil Catch Can- Anyone Use Them?

Oil catch can worth it?

  • Yes

    Votes: 39 76.5%
  • No

    Votes: 12 23.5%

  • Total voters
    51

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Iceaxe

I am my rig's nemesis.
Joined
Sep 16, 2011
Threads
60
Messages
578
Location
Reno
Is anyone on 'Mud using an oil catch can (especially the SC guys)? Is this something worth doing? I know for a fact I'm getting oil in my intake with a 6 psi SC...
 
I have seen post here where some guys use them.
 
I'd venture to say there are dozens if not a hundred or so installations. There are threads going back years.

I have catch can and I dump it out every oil change or about 3000 miles. Mine catches about 1/4 cup of blow by oil. I had the second catch can but it never had anything in it so I removed it because I really didn't like the mounting location anyway.
 
I have thought about it, but would rather have that oil in the blow-by going back into the intake as top-cylinder lube. But that's just me....
 
I have thought about it, but would rather have that oil in the blow-by going back into the intake as top-cylinder lube. But that's just me....

You mean the top like 1/2"? The cylinder walls are well lubricated with the piston rings constantly scraping the walls. Any oil blow by does more to affect exhaust readings than it does to lubricate since it just gets carbonized during the 4-stroke process. I'm not trying to lubricate the intake manifold so... :meh:
 
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No SC here, but I run a catch can. I think it is helpful for stopping buildup in the plenum and any sensors attached. I have to dump out oil every 2 weeks. About 1/4 cup. :/
 
You mean the top like 1/2"? The cylinder walls are well lubricated with the piston rings constantly scraping the walls. Any oil blow by does more to affect exhaust readings than it does to lubricate since it just gets carbonized during the 4-stroke process. I'm not trying to lubricate the intake manifold so... :meh:

I'm thinking valve stems and compression rings..... but I could be mistaken here too.
 
Functionally, is there a true reason? In other words, is there a mechanical / engine performance reason to install it?
 
I have a catch can in all three of my 80 series Lexi.
 
Ok, but WHY did you install them? Is there a true mechanical or performance reason?
 
The fallacy is that you think you are catching a significant amount, but it is actually a tiny amount of the total crankcase vapor going through the PCV. If it was a good idea, the factory would put them on every engine.

I would agree if I was actually losing/burning oil but I'm not. I'm, at this point, literally catching any oil vapor that is trying to get to the intake. Unless my oil is reproducing itself, all oil is accounted for between crankcase and catch can...well, within a few mL.
 
Ok so that's what I'm getting at- it sounds like we have a debate that the oil does not hurt the intake / engine....?
 
Not really a debate. You could put a lot of things through the intake that wouldn't "harm" the engine but isn't the best for it. The vents exist for a reason. To allow the blow by to get out and not pressurize seals. the way around it is to vent it back into the intake so that the oil/vapor/water goes through combustion and emission controls. Like many have said you can look inside your intake and make up your own mind on if you want that going through. No need to debate it. I don't want a swing out tire carrier someone else might. I don't want it going through the intake and will deal with the hassle others might.
 
I use 1 but you really need 2. One for each line coming out of the valve cover to the intake. I use the morosso can which runs $150 each. The oil vapor that comes up throught the PCV valve and the other line end up coating the walls of the intake with sludge over time. I empty my can out every oil change and yes there is oil the can every time.
 
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