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Weird foam coming from crack in garage floor

Discussion in 'Off Topic' started by Kipernicus, Feb 12, 2014.

  1. Kipernicus

    Kipernicus Model S Res#P1440

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    Noticed this dried up foamy stuff under the car, like it dripped off and crystallized. Not salt (bay area).

    Maybe residual car wash soap? I go to Foster City touchless, but it has been weeks since I last went. Or something else I picked up from the road?

    uploadfromtaptalk1392229422984.jpg
     
  2. Kalud

    Kalud Member

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    Looks like fungus to me, probably not from the car itself but more from the garage floor + water / humidity from the car...
     
  3. Hybris

    Hybris Member

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    cocaine?
     
  4. EdA

    EdA Model S P-2540

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    Road salt...you should see my garage.
     
  5. AMPd

    AMPd Active Member

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    Now that's what I call a car paying for itself!
     
  6. tezco

    tezco Sig P85

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    Looks like concrete efflorescence.
     
  7. TurboFroggy

    TurboFroggy Member

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    Yeah that and stripper glitter keep building up in on the back seat of my P85.
     
  8. SFOTurtle

    SFOTurtle Active Member

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    Road salt in the SF Bay Area?
     
  9. jdevo2004

    jdevo2004 Member

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    It is AL2O3. A few more years and you wont have much of a car left!

    228_0.jpg
     
  10. Kipernicus

    Kipernicus Model S Res#P1440

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    It's interesting that it doesn't happen under my wife's car (acura tsx). For some reason the water dripping off the MS is causing efflorescence but water off the Acura does not? Anyone else seeing this?
     
  11. jdevo2004

    jdevo2004 Member

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    I just said it, your car is rusting from the inside out. Aluminum Oxide.
     
  12. Joe H.

    Joe H. Member

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  13. artsci

    artsci Sponsor

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    Looks like something you could get high on:)
     
  14. tezco

    tezco Sig P85

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    Perhaps salt was previously deposited in only that parking space.
     
  15. Joe H.

    Joe H. Member

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    I was trying to link to another thread where a similar "white powder" has shown up (much smaller amounts) in other peoples car and they are speculating corrosion as well. Look at page 2 of the "My baby got hurt :(" post under the main Model S forum. Now that is a lot of powder so let's just hope it is salt or cocaine.


    My other post said it was waiting for mod approval and I guess it never got approved.
     
  16. lorih

    lorih Member

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    Kip, there is a lot of speculation here. Did you bring the car, and a sample of the white stuff to Tesla service to see what they think? That seems like the reasonable thing to do.

    (Speaking of reasonable, if I didn't know how reasonable and well behaved your sons are, I would have said it is just laundry soap they put under your car to play a prank on you, but your kids are too well behaved for that.)
     
  17. Lloyd

    Lloyd Active Member

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    This is lime salts leaching from underneath your slab. It is due to excess moisture underneath your slab, and/or improper moisture barrier applied underneath it. It has nothing to do with your car! In the summertime see if you can improve the drainage away from your house to keep the soil drier.
     
  18. lorih

    lorih Member

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    That's the best suggestion I've seen here, and easy to test. Clean off the garage floor, switch parking spots with wife's car, and see if it comes back.

    :)
     
  19. Zextraterrestrial

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    or put a bit of acid on it and see if it bubbles.

    or not since aluminum oxide will react w/ both acid and base...bad test
     
  20. lorih

    lorih Member

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    Chemistry...cool!
     

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