Why doesn't an oil catch-can come stock on our Mustangs??

Discussion in 'V8 5.0L Engine / Mods: Bolt-ons, Exhaust, Tuning' started by Jaybob, Jul 1, 2019.

  1. 2017GBGTPP

    2017GBGTPP Well-Known Member

    First Name:
    Dan
    Vehicle(s):
    2017 Grabber Blue Premium Mustang GTPP with Recaros
    Joined:
    Jul 2, 2016
    Location:
    Tempe, Arizona
    Posts:
    401
    Likes Received:
    422
    0   0   0
    I just read that some options on the new GT500 include a catch can.
     
    Andy13186 likes this.
  2. Andy13186

    Andy13186 Well-Known Member

    Vehicle(s):
    2018 Mustang GT 10speed
    Joined:
    Sep 19, 2018
    Location:
    Florida
    Posts:
    1,002
    Likes Received:
    320
    0   0   0
    My Moroso catch can on my CTS-V (modded 630rwhp) caught like 15 oz of oil per 5k miles lol. I drove that car insanely hard though. Emptied it every 500 miles or so. Any boosted car needs one IMO.
     
  3. bootlegger

    bootlegger Enginerd

    First Name:
    James
    Vehicle(s):
    Ex 2008 Mustang GT Owner
    Joined:
    Jul 12, 2017
    Location:
    Mount Pleasant, SC
    Posts:
    1,702
    Likes Received:
    549
    0   0   0
    No, it isn't a requirement. Whether it is a benefit is debatable. It won't hurt though.
     
  4. bootlegger

    bootlegger Enginerd

    First Name:
    James
    Vehicle(s):
    Ex 2008 Mustang GT Owner
    Joined:
    Jul 12, 2017
    Location:
    Mount Pleasant, SC
    Posts:
    1,702
    Likes Received:
    549
    0   0   0
    I work for an OEM, and this just isn't true. When stuff breaks faster, our warranty claims increase, and it costs the company more money. We design systems to go 60k without a single issue. Ideally, we would like them to last beyond 100k miles. In the case of blow-by, we assume that the LAC fuel is able to do its job, and keep the valves clean. In most cases it will. However, it is normal for manufacturers to recommend a fuel supplier specifically. They will say BP, Shell, or Exxon on the cap, as those are Top Tier and will clean up the valves.

    The benefit is much greater in boosted applications for sure.
     
  5. 1MEAN18

    1MEAN18 Well-Known Member

    First Name:
    Mike
    Vehicle(s):
    '18 Mustang GT & a 2007 Mustang that I daily.
    Joined:
    May 5, 2019
    Location:
    Marysville, Ohio
    Posts:
    619
    Likes Received:
    301
    Rating:
    100%
    6   0   0
    In a DI engine, fuel doesn't matter...the only way to keep intake valves clean is using a catch can because in a DI engine, no liquid flows over the intake valves to help keep them clean. SO sorry... I could give two shits what a manufacturer says when its not applicable to my engine in any physical way to begin with. And I stand by my original words that manufacturers could give two shits about the cleanliness of my engine. Add to that, they are too cheap to fix it with a simple catch can too. Hell, Ford is too cheap to replace the prop rod with hood struts like almost all other manufacturers do on 50k cars!!! So why expect them to care about the intake valves cleanliness also...what you said makes me laugh.
     
  6. bootlegger

    bootlegger Enginerd

    First Name:
    James
    Vehicle(s):
    Ex 2008 Mustang GT Owner
    Joined:
    Jul 12, 2017
    Location:
    Mount Pleasant, SC
    Posts:
    1,702
    Likes Received:
    549
    0   0   0
    #36 bootlegger, Dec 5, 2019
    Last edited: Dec 5, 2019
    There are no single fuel system DIG V8 mustangs in existence. You may want to research the fuel system in your car. Fuel most certainly does go on your intake valves.
     
    re-rx7 likes this.
  7. 1MEAN18

    1MEAN18 Well-Known Member

    First Name:
    Mike
    Vehicle(s):
    '18 Mustang GT & a 2007 Mustang that I daily.
    Joined:
    May 5, 2019
    Location:
    Marysville, Ohio
    Posts:
    619
    Likes Received:
    301
    Rating:
    100%
    6   0   0
    You sir are an idiot. Obviously you don't know how DI engines work.
     
  8. bootlegger

    bootlegger Enginerd

    First Name:
    James
    Vehicle(s):
    Ex 2008 Mustang GT Owner
    Joined:
    Jul 12, 2017
    Location:
    Mount Pleasant, SC
    Posts:
    1,702
    Likes Received:
    549
    0   0   0
    You can't be serious...
    I mean, I develop DI fuel systems for a living. I have been doing it for 7 years, and have 13 years of engineering experience working with DI engines. Pretty sure I understand a bit about it. Have you ever looked at your engine without the cover? Please do a bit of research before commenting on the subject. Start here: http://fordauthority.com/2018/05/th...ation-coyote-v8-gets-explored-in-depth-video/
    "Granted, an even bigger deal than its spray-in cylinder liners is the latest Coyote’s new dual-fuel-injection system, which couples direct- and port-injection to leverage the best qualities of each. This, Jason says, is “great from a carbon-buildup standpoint, but it also allows for better fuel control at high-load, high-rpm scenarios.”"



    Aside from all that, blow-by is only one source of valve deposits. EGR and combustion gasses that escape during transition also tend to cause buildup. All the catch cans in the world aren't going to stop some buildup without help from a port injector. BMW guys use catch cans and still tend to need a good walnut blasting of the valves over time. Their systems are true single system DIG, unlike the Mustang GT.
     
  9. 1MEAN18

    1MEAN18 Well-Known Member

    First Name:
    Mike
    Vehicle(s):
    '18 Mustang GT & a 2007 Mustang that I daily.
    Joined:
    May 5, 2019
    Location:
    Marysville, Ohio
    Posts:
    619
    Likes Received:
    301
    Rating:
    100%
    6   0   0
    I could make up a story about me being the king of some country too...doesn't make it true. What you said earlier, well it made me laugh because its just ignorant. Fuel DOES NOT FLOW OVER INTAKE VALVES ADDING A CLEANING EFFECT in my Gen 3 coyote. And if you are some type of engineer, then that adds to my disrespect of you sir, because mechanics routinely fix what engineers screw up from the start.
     
  10. re-rx7

    re-rx7 Ruck the night away

    First Name:
    Brandon
    Vehicle(s):
    19 5.0
    Joined:
    May 24, 2015
    Location:
    Gainesville, Tx
    Posts:
    727
    Likes Received:
    223
    Occupation:
    Service Advisor
    0   0   0
    Actually it does? Thats one of the main reasons Ford retained port fuel on the Gen3. If you researched you would know this instead of talking about things you obviously know nothing about.
     
    bootlegger likes this.
  11. 1MEAN18

    1MEAN18 Well-Known Member

    First Name:
    Mike
    Vehicle(s):
    '18 Mustang GT & a 2007 Mustang that I daily.
    Joined:
    May 5, 2019
    Location:
    Marysville, Ohio
    Posts:
    619
    Likes Received:
    301
    Rating:
    100%
    6   0   0
    Dual fuel is for emissions and more power. Still isn't injecting anything across any intake valves in the engine, so no cleaning or cooling effect.
     
  12. re-rx7

    re-rx7 Ruck the night away

    First Name:
    Brandon
    Vehicle(s):
    19 5.0
    Joined:
    May 24, 2015
    Location:
    Gainesville, Tx
    Posts:
    727
    Likes Received:
    223
    Occupation:
    Service Advisor
    0   0   0
    bootlegger likes this.
  13. 1MEAN18

    1MEAN18 Well-Known Member

    First Name:
    Mike
    Vehicle(s):
    '18 Mustang GT & a 2007 Mustang that I daily.
    Joined:
    May 5, 2019
    Location:
    Marysville, Ohio
    Posts:
    619
    Likes Received:
    301
    Rating:
    100%
    6   0   0
    I just looked up a diagram of the area, looks like I was wrong, port side DOES flow past the intake valve. My bad. Must have had it in my head the port injector was like the DI one on the high pressure side. So is this why we get almost no oil in our catch cans? Does this make using a catch can not really necessary on an '18 up coyote? Mind = Blown. Hell, now I might as well sell my JLT one if that's the case.
     
  14. re-rx7

    re-rx7 Ruck the night away

    First Name:
    Brandon
    Vehicle(s):
    19 5.0
    Joined:
    May 24, 2015
    Location:
    Gainesville, Tx
    Posts:
    727
    Likes Received:
    223
    Occupation:
    Service Advisor
    0   0   0
    I think a catch can isnt a bad idea just due to octane dilution. It keeps power consistent
     
  15. 1MEAN18

    1MEAN18 Well-Known Member

    First Name:
    Mike
    Vehicle(s):
    '18 Mustang GT & a 2007 Mustang that I daily.
    Joined:
    May 5, 2019
    Location:
    Marysville, Ohio
    Posts:
    619
    Likes Received:
    301
    Rating:
    100%
    6   0   0
    last time I checked mine, it had maybe an ounce of oil in it, over 1 year use and roughly 2k miles. I cleaned it out, changed my oil and didn't really think much about it. Now, thinking about how much oil my Ecoboost caught, the Mustang really must not need one unless its a daily driver. I run E85 so I'm not really worried about octane dilution at all since my starting octane rating is likely over 100. Time to sell the JLT off my '18 it looks like.
     
Loading...

Share This Page