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It's not my intention to start a Forum war here.
And I know all the reasons why many of you have installed catch cans.
Just curious if there's a specific reason why anyone has decided NOT to install one??
 

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It's not my intention to start a Forum war here.
And I know all the reasons why many of you have installed catch cans.
Just curious if there's a specific reason why anyone has decided NOT to install one??
1} They cost money while not installing one doesn't cost money.
2} They require emptying periodically while not installing one doesn't require any extra maintenance.

I had one on my 2008 R/T for a decade so I'm not anti-catch-can. But... there's no performance or longevity benefit. They look cool and they can make you feel like you've done something meaningful. If you're dressing up an engine bay, they're a neat add-on.
 

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I can go either way about oil seperators.

The drivers side is useless, never a drop in mine. I only did it to keep the intake clean.

Passenger side catches about a 1/4 of a cup in an oil change. Not sure exactly where it would go to if it was to pass through the factory tube.
Sometimes I wonder if it would just go back into the engine and maybe this is a waste of time, or is it stopping it from getting to the drivers side?

The world may never know......
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From what ive read there is something similar already built in. I think it’s really just peace of mind for people that just want that extra protection.
 

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I've always put a catch can (oil separator) on anything that is forced induction. Cars, trucks, RZR, ATV's, 4 and 2 stroke, both supercharged and turbocharged. In all instances, the amount of oil that is caught is barely more than negligible and more of a peace of mind type of thing. Just an observation. There are extreme examples in every application of course.
 

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THANK YOU!!!!!!!!! Yes, I have NOT installed one because I have yet to see proof where it does any good. To me, it's one of those gimmicks that everyone must have just because. I want to see dyno tests of a few of our engines showing power loss or something. I understand it collects oil, but so what? "IF" these actually did any good or were needed, the Dodge would have installed them; like oil filters, fuel filters, etc.
 

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Just curious if there's a specific reason why anyone has decided NOT to install one??
Yeah, some idiot dealer or Dodge manager might see it and decide to void your engine warranty.




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Yeah, some idiot dealer or Dodge manager might see it and decide to void your engine warranty.




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EXCELLENT point, since they may not know what it is nor the reason! Like denying a warranty claim on a speaker because wider tires are installed.
 

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A Van Down by the River
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THANK YOU!!!!!!!!! Yes, I have NOT installed one because I have yet to see proof where it does any good. To me, it's one of those gimmicks that everyone must have just because. I want to see dyno tests of a few of our engines showing power loss or something. I understand it collects oil, but so what? "IF" these actually did any good or were needed, the Dodge would have installed them; like oil filters, fuel filters, etc.
No, just no.
 
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When i installed my catch can and removed the factory hose i can see Physical Engine oil crossing over to the other side it's visible. Not in large amounts but oil is present. So this means engine oil blow-by is crossing over to the other side in small amounts. That is all i can prove leading me to believe a catch can is a good idea.
 

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When i installed my catch can and removed the factory hose i can see Physical Engine oil crossing over to the other side it's visible. Not in large amounts but oil is present. So this means engine oil blow-by is crossing over to the other side in small amounts. That is all i can prove leading me to believe a catch can is a good idea.
I don’t think anyone doubts that is happening. The doubt comes in if it honestly matters or not.
 

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2019 Challenger Hellcat Widebody (destroyer grey)
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THANK YOU!!!!!!!!! Yes, I have NOT installed one because I have yet to see proof where it does any good. To me, it's one of those gimmicks that everyone must have just because. I want to see dyno tests of a few of our engines showing power loss or something. I understand it collects oil, but so what? "IF" these actually did any good or were needed, the Dodge would have installed them; like oil filters, fuel filters, etc.
Just keep in mind that if any oil vapor does happen to make it into the combustion, it can cause a lower octane rating with the fuel, detonation, and timing will get pulled. This is the known reasoning for adding a good catch can with boosted applications.
 

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I haven't installed one because the engine didn't come with one installed from the factory. when warranty is over, I'll probably do it. That way I can sit on both sides of this conversation.
 

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A properly engineered oil separator does offer a benefit, especially the passenger-side unit in the Hellcat application. We use the JLT units and the oil collected in the can is oil that was prevented from making its way through the inlet tract and into the combustion chamber. If allowed to pass, this oil would contaminate every surface it encountered on the path into the engine, and it has a negative affect on the combustion process because engine oil is very low octane.
While Dodge has recognized the value of minimizing oil getting into the inlet tract and installed a means to reduce it in the valve cover, Dodge (or any OEM) will not factory-install a system like the JLT kit because this type of kit requires periodic maintenance to function properly, which is emptying the can.
 

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A Van Down by the River
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I don’t think anyone doubts that is happening. The doubt comes in if it honestly matters or not.
It matters if you don't like your intercooler bricks slathered in oil residue.
 

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A properly engineered oil separator does offer a benefit, especially the passenger-side unit in the Hellcat application. We use the JLT units and the oil collected in the can is oil that was prevented from making its way through the inlet tract and into the combustion chamber. If allowed to pass, this oil would contaminate every surface it encountered on the path into the engine, and it has a negative affect on the combustion process because engine oil is very low octane.
While Dodge has recognized the value of minimizing oil getting into the inlet tract and installed a means to reduce it in the valve cover, Dodge (or any OEM) will not factory-install a system like the JLT kit because this type of kit requires periodic maintenance to function properly, which is emptying the can.
Yep, there's a reason why the GT500 has one from the factory. Ford understands that the GT500 target audience knows they need to be emptied so they included one.
 

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Yep, there's a reason why the GT500 has one from the factory, but Ford understand that the GT500 target audience knows they need to be emptied so they included one.
To me that is ridiculous logic to not install one from the factory if they do indeed provide a benefit. I mean we need to check air pressures, change oil, top off fluids, etc anyway. At the very least they could have offered it as an upcharge option. They missed out on fear purchase profits from 50% of owners for sure.
 
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It matters if you don't like your intercooler bricks slathered in oil residue.
That's a possibility of course, but that certainly will not happen in every instance.

I have VERY limited experience in the catch can's for the Hellcats, but in every other instance of 4 stroke's (including both circle track and drag racing specific applications), the intercooler was not even close to being "slathered" in oil residue. In my experience, even the motors that spend long periods of time under high RPM and boost don't produce the amount of residue to warrant being concerned about.

The better safe than sorry attitude is always a safe bet particularly in racing specific applications. With that being said however, I most certainly would not install one inside of the warranty period. Again, the better safe than sorry idea.
 

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Your specific examples of drag racing and circle track applications may not have included closed PCV systems, with oil vapor lines connected directly to the air inlet tube. In late model street going applications, these tubes are open and pass a lot of oil vapor into the supercharger.
While the Hellcats are newer, and benefit from lower miles and newer technology, I've seen actual puddles of oil around the intercooler bricks in Lightning and Cobra applications. This accumulation of oil very likely has a measurable affect on performance.
 
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