Oil Catch Can

Discussion in 'Dodge Challenger General Maintenance' started by Hopslayer, Oct 23, 2018.

  1. Hopslayer

    Hopslayer Full Access Member

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    I never heard of an oil catch can before today. Was wondering if anyone here uses one, what the benefit is, and if it’s even needed on a V6 without a CAI. Thanks.
     
  2. IntimidatorRT

    IntimidatorRT Well-Known Member Staff Member Super Moderator

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    had one on my 2009 SE 3.5L V6 as well on my 2009 RT. they catch the oil that passes through the PCV system and you wont have oil dumping onto the intake.
     
  3. F4Phantom2

    F4Phantom2 Member

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    I noticed a highway mpg increase after installing one. Keeping oil out of the cylinders reduces detonation. Detonation causes the knock control feature of the ECM to retard the timing, reducing fuel mileage.
     
  4. 70-426_10-SRT

    70-426_10-SRT B&E body lover

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    Seriously?
    Damn computers :mf_pcwhack::angry94:

    But if I get much better gas mileage, it will be hard to call this thing a MUSCLE CAR?

    26MPG-80MPH.jpg
     
  5. F4Phantom2

    F4Phantom2 Member

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    I really llike my '10 3.5L. It has enough scoot to get me in trouble, gets 28-29 mpg on the highway, and 18-19 in pure stop and go driving. Catch can, K&N air intake, and the 87 octane hemi fever tune. (The last had no effect on MPG, just makes the trans shift a lot better and the throttle more sensitive.)
     
  6. jordo487

    jordo487 New Member

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    I would assume this was on your V6? Where did you get your tune? A complaint is my throttle response and would love to see that improved.

    Sent from my SM-G955U using Tapatalk
     
  7. Vyper

    Vyper Well-Known Member

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    26.5 Average MPG!!! WOW

    My average MPG is around 11.5
    The only time it reads more than 20MPG is when I reset it and only drive on the highway.
     
  8. 70-426_10-SRT

    70-426_10-SRT B&E body lover

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    Yea, that was a 10 mile run, straight, flat, reset at 80 MPH

    But overall I can't complain, in the 1st 5 months of driving this 2010 SRT8:

    6/15/2018 8,505
    11/16/2018 17,797

    Miles 9,292
    Gas 475.768

    min MPG 15.9
    averaged MPG 19.53
    MAX MPG 22.0

    80% Highway
    10% Town
    10% Playing :)
     
  9. Vyper

    Vyper Well-Known Member

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    Mine is a 2015 SRT 392 with just around 26,000
    I'm more like:

    min MPG 7.9
    avg MPG 11.5
    max MPG 23.5

    58% Town
    40% Playing
    2% Highway
     
  10. SRT-Tom

    SRT-Tom Well-Known Member Staff Member Super Moderator Article Writer

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    There have been many posts about the pros and cons of oil catch cans. But do you really know how they work?

    The less restrictive types have a steel wool medium at the top of the can. The many strands of the steel wool provide a surface for the air/oil vapor to adhere to, and once they stick to it, they are no longer in the air flow. This “scrubbing action” is how most of the larger oil droplets are removed. The “torturous path” the air/oil vapor takes, as it passes thru the separator, removes the rest.

    By torturous path, I mean the air flow in through the inlet hose into the separator head area. The vapor must make a 90 degree turn into the bowl area, and then another 180 degree turn back up into the head area again, then a final 90 degree turn to go out the outlet hose.

    All these quick changes in the direction of flow will strip oil droplet molecules out as they weigh more than the air molecules, and can't make the redirecting turns as easily. As a result, the oil will end up on the walls of the separator bowl or on the steel wool instead and will drip down into the bowl for collection. The air will then continue to flow right on out.