Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
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  1. #1
    Join Date
    Dec 2012
    Location
    Palm Beach County, FL
    Posts
    324

    Shutting down quick after parking bad???

    A mech told me that after I park, I should wait 5-10 seconds before cutting the ignition.

    Is this true and if so what is the logic behind it?
    __________________________________________________ ____
    2003 ZHP 4dr | 145,000 miles (ACTUAL before RIP) | BBS 17"
    Hankook Ventus V12
    Front: 225/45ZR
    Rear: 255/40ZR-17 Hankook Ventus V12 evo2 XL
    [ Staggered on square (17x8.5 +38) ]

  2. #2
    Iíve never heard of that. But it does usually take me a few seconds to turn off ignition once I park with my ritual that I have.


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    2006 Coupe | Black Sapphire Metallic | Natural Brown | Gruppe M Intake | Corsa TSE3 | Michelin PSS on Apex ARC-8 | Koni Yellows |

  3. #3
    Join Date
    Dec 2019
    Location
    Raleigh, NC
    Posts
    736
    Some Germans like to cool down their engine before shutting off, just like you would warm it up before stressing it. But this has to be done a couple minutes before you shut the car off obviously.
    330i Base | Mysticblau | Slicktop | 6MT

  4. #4
    Quote Originally Posted by Galapolis View Post
    Some Germans like to cool down their engine before shutting off, just like you would warm it up before stressing it. But this has to be done a couple minutes before you shut the car off obviously.
    Iíve heard of people needing to do that on old turbo charged cars after a spirited drive to keep the turbo from over heating. Not an issue on modern turbocharged cars. But as you said, it was idling for a few minutes rather than seconds.


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    2006 Coupe | Black Sapphire Metallic | Natural Brown | Gruppe M Intake | Corsa TSE3 | Michelin PSS on Apex ARC-8 | Koni Yellows |

  5. #5
    Join Date
    Dec 2019
    Location
    Raleigh, NC
    Posts
    736
    Yeah a lot of Germans I know are quite old fashioned. Wouldn't be surprised if they just carried that mentality over to newer cars.
    330i Base | Mysticblau | Slicktop | 6MT

  6. #6
    Join Date
    Jan 1970
    Location
    Branford, CT
    Posts
    16,008
    Waiting a few seconds before shutting off isn't necessary on our modern naturally aspirated cars, and even as san said, isn't even really a problem on modern turbo cars either.
    BP
    2005 330i ZHP / 6MT
    Imolarot / Naturbraun



    It's not the car you drive, it's how you drive it.

  7. #7
    Join Date
    May 2020
    Location
    SF Bay, CA
    Posts
    1,091
    Quote Originally Posted by Galapolis View Post
    Yeah a lot of Germans I know are quite old fashioned. L
    That shows in some of their business too lol

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    2004 BMW 330CI ZHP (well, technically ZAM)


  8. #8
    Join Date
    Nov 2014
    Location
    Portland, OR
    Posts
    10,145
    I usually take a few minutes "cool down" i.e. just puttering around at 2k RPM after a spirited drive before I shut it off. Or just a few seconds after coming to a stop after driving normally, but that's just a habit more than anything.

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