catch can benefit

[joethefordguy]

apparently i asked this in the wrong place and I offended the generation police nazis.

what is the effect of a catch can on longevity? how many miles more will my engine last? does it help the motor last twice as long, or what? has anyone done any real world checking?

looking for a metric, not a generality.

 

[David E]

How much oil could a oil catch can catch if an oil catch can could catch oil?
The long story short -- It catches oil! Not a bad idea when it come to preventing possible buildup in the crankcase. (Intake Valves, Pistons)
Helps in the prevention of knocks and pre-ignitions as well.
Now all that said one must make sure not to buy cheap !!! cheap ones have no proper "filtration" and really do nothing (just a straight line through) and this is a maintenance item since it has to be drained routinely. I doubt it makes any motor last twice as long but the benefits are pretty solid and it is a great extra measure that is simple and DIY for most.
On the EcoBoost engines there is higher pressure on the intake side of the piston combined with low friction rings makes a much higher blow-by thus making this a pretty essential choice to add in-order to prevent damage (especially with injectors inside the chamber).
There are some great videos on YouTube by people much wiser who explain in much more details. Good luck.

 

[joethefordguy]

I've seen the videos. nobody will tell you how many more miles it has shown in actual real world tests.
i get that it catches oil. I do not dispute that.
what is the actual, measurable benefit to my motor? it's a simple question, that nobody actually answers. makes me skeptical.
actually, by now, I'm convinced it is just ********. I said above that nobody answers the question and that makes me skeptical.

actually, considering the extent of the tap dancing, strawman responses, and personal attacks, not only do I believe it is ********, but these asshats know it is ********. I assume they are paid by catch can vendors.

don't like that? answer the question, admit you don't know, or just shut the **** up.

 

[David E]

WOW.. Obviously you have some reading comprehension issues. There is a clear and proven benefit to the catch-can. Now about those anger issues I would recommend seeking help, its really not good for your blood pressure and other issues may arise as a result. Now I am also pretty certain that you did not see enough/any relevant videos. There is an engineer that covers these pretty extensively ad also refers to a research done that proves the benefit of such a system and its relevance (especially to GDI engines). So now with no further tap dancing, strawmen responses, and personal attacks (mainly coming from your side) you keep believing that this is a bunch of bolony and keep on driving.
In full disclosure I am paid for and sponsored by the Qanon group LLC. (Just please keep that between us)
Cheers ...

 

[1970Maverick]

I've seen the videos. nobody will tell you how many more miles it has shown in actual real world tests.
i get that it catches oil. I do not dispute that.
what is the actual, measurable benefit to my motor? it's a simple question, that nobody actually answers. makes me skeptical.
actually, by now, I'm convinced it is just ********. I said above that nobody answers the question and that makes me skeptical.

actually, considering the extent of the tap dancing, strawman responses, and personal attacks, not only do I believe it is ********, but these asshats know it is ********. I assume they are paid by catch can vendors.

don't like that? answer the question, admit you don't know, or just shut the **** up.

I can't definitively answer your question but let me explain why. I don't think you can quantify the benefits unless you have enough people who can take part in a real world test and also have a control group who don't use a catch can. There are too many variables to give you an answer. Search online for technical articles about direct injection engines and I think you will conclude that it will benefit you. I too was skeptical but after educating myself I installed one. There are some engines now that are direct injection and also have port fuel injection and they are programmed to switch to the port injection at certain intervals to wash the oil off the intake valves. Also look up catch can comparisons and you will see that they all work basically the same but range in price from $30 to several hundred dollars.

 

[Boostedbus]

I've seen the videos. nobody will tell you how many more miles it has shown in actual real world tests.
i get that it catches oil. I do not dispute that.
what is the actual, measurable benefit to my motor? it's a simple question, that nobody actually answers. makes me skeptical.
actually, by now, I'm convinced it is just ********. I said above that nobody answers the question and that makes me skeptical.

actually, considering the extent of the tap dancing, strawman responses, and personal attacks, not only do I believe it is ********, but these asshats know it is ********. I assume they are paid by catch can vendors.

don't like that? answer the question, admit you don't know, or just shut the **** up.

Ok here’s what I can offer you as cold hard facts.... I have retrieved 2 cups of oil from my catch can over the last 22,000 miles. That’s 2 cups of oil that I kept from being cooked on my valves, oil logging my intercooler, fouling my spark plugs, and possibly contributing to clogging my catalytic converters. As far as doubling the life of my engine, the jury is still out. Maybe there isn’t any benefit to engine longevity, but there sure is for performance, mileage, and maintenance. Clean plugs, intercooler, valves, and converters = performance and MPG’s.

 

[joethefordguy]

I have not been clear, i see.
I understand there is a potential benefit.
I want to know how beneficial it is. If i’m going to pay x dollars, i want to know how many miles of increased engine life i get.
That way i can determine whether it is a wise expenditure.
If it’s too hard to understand whether it is worth the money, then it is not worth the money.

 

[bigdogchrisl]

Measurable benifit is minimal to no carbon build up in the back of your valves. This only is really applicable to direct injection engines, from a stock perspective.
In higher boost applications, think 18lbs and up, the benifits increase. But since you are asking the question here I suspect your not dealing with a 1000HP monster, which is why carbon build up is your answer.
To me, it was a $300 shot at NOT having to pay $1200 every 40K miles to clean carbon.
Almost 120K later, still no appreciable build up. Thanks Black Forrest!


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[bigdogchrisl]

I have not been clear, i see.
I understand there is a potential benefit.
I want to know how beneficial it is. If i’m going to pay x dollars, i want to know how many miles of increased engine life i get.
That way i can determine whether it is a wise expenditure.
If it’s too hard to understand whether it is worth the money, then it is not worth the money.

As soon as you have to pay for carbon cleaning you'll get it. Just to be clear...
Good luck!

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[bigdogchrisl]

Ok here’s what I can offer you as cold hard facts.... I have retrieved 2 cups of oil from my catch can over the last 22,000 miles. That’s 2 cups of oil that I kept from being cooked on my valves, oil logging my intercooler, fouling my spark plugs, and possibly contributing to clogging my catalytic converters. As far as doubling the life of my engine,View attachment 40401 the jury is still out. Maybe there isn’t any benefit to engine longevity, but there sure is for performance, mileage, and maintenance. Clean plugs, intercooler, valves, and converters = performance and MPG’s.

Preach on!

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[joethefordguy]

you are ignoring the question: " want to know how many miles of increased engine life i get."
if you want to talk about "measurable benefits" you claim, please don't pretend you are responding to me.

FYI - I'm not spending any money now to "clean carbon". I've never spent a penny on that; every engine I've ever had went at least nearly 200k or better. "carbon buildup" was never a reason for moving on. come to think of it, the reasons for moving on were:

1. moving up
2. transmission
3. accident

I've never had to do any mechanical work because of "carbon buildup".
so far, every single answer I've seen could have been written by pitchmen for catch can vendors. long on claims, scant on numbers.

MILES, guys. how many more miles will a catch can get me? if you don't answer that, please don't bother. I'm glad it makes you feel better about yourself.

 

[joethefordguy]

As soon as you have to pay for carbon cleaning you'll get it. Just to be clear...
Good luck!

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********.

 

[bigdogchrisl]

ROTFL - absolutely.

I honestly wish you the best and hope knowing everything won't stop you from asking here again.


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[joethefordguy]

Never mind. obviously, the catch can is yet another myth.

 

[joethefordguy]

ROTFL - absolutely.

I honestly wish you the best and hope knowing everything won't stop you from asking here again.


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you are dishonest. the question has yet to be answered, so you cannot honestly claim I know everything. which catch can vendor do you work for? or are you just justifying the money you spent because I've made you realize you have no clue what you got for your money?

I honestly wish you the best and hope you feel better about your purchase, though it won't stop you from posting a snarky reply here again.

 

[bigdogchrisl]

you are dishonest. the question has yet to be answered, so you cannot honestly claim I know everything. which catch can vendor do you work for? or are you just justifying the money you spent because I've made you realize you have no clue what you got for your money?

I honestly wish you the best and hope you feel better about your purchase, though it won't stop you from posting a snarky reply here again.

I'm all good, no need to justify anything, just honestly trying to help with facts from my experience.
I'm sorry your butthurt, I simply replied to the tone presented after trying to help.
Good luck

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[Frank Swygert]

As far as engine longevity the effects are probably negligible. Many people have logged over 200K miles without a catch can, and the engines will last 250-300K miles with regular maintenance. I've never had engine issues related to carbon build-up on anything other than very well worn (old style) engines that had been burning a good bit of oil for a long time. Two cups in 22,000 miles is normal oil use -- a little leaks past seals and rings no matter how good they are. I can see where it could reduce any carbon build-up, but the better benefit might be in emissions and helping the catalytic converter do it's job longer. Not much benefit there either. So IMHO, there is negligible benefit, at least not until there is very high mileage and wear on the engine, but it doesn't hurt anything either.

 

[nick d vicari]

Ok here’s what I can offer you as cold hard facts.... I have retrieved 2 cups of oil from my catch can over the last 22,000 miles. That’s 2 cups of oil that I kept from being cooked on my valves, oil logging my intercooler, fouling my spark plugs, and possibly contributing to clogging my catalytic converters. As far as doubling the life of my engine,View attachment 40401 the jury is still out. Maybe there isn’t any benefit to engine longevity, but there sure is for performance, mileage, and maintenance. Clean plugs, intercooler, valves, and converters = performance and MPG’s.

 

[nick d vicari]

I have the pricey catch can and cant belive how much oil it stops from going back into the engine. I have gone atleast 12,000 miles and have collected almost 3/4 cup of waste oil. I have done my research and belive in this fix.

 

[1970Maverick]

here's a link to a discussion about CCans https://www.expeditionforum.com/threads/catch-can.42725/
I spent about $50 total for the can, hoses, connectors & misc mounting hardware

here's an article about direct injection https://www.enginebuildermag.com/20...e-direct-injection-issues-facts-fictions-gdi/