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  1. Join Date
    Feb 2005
    Posts
    3,299
    #11
    If the distilled vinegar does not work, try miratic (muriatic) acid. I tried this on an old ride. The acid will soften the cement so you can rinse it of. When you rinse, rinse thoroughly. Don't worry about the paint being damaged. It would only be damaged if you let the acid sit for more than 10 minutes.

  2. Join Date
    Jun 2004
    Posts
    185
    #12
    Here is the Picture

  3. Join Date
    Feb 2005
    Posts
    3,299
    #13
    Hmmm. Is that concrete or tar? It kinda looks like tar to me.

  4. Join Date
    Jun 2004
    Posts
    185
    #14
    Its concrete. Sana nga tar lang yan.

    It's all over the roof, hood, front & back windshield, and trunk cover. May construction sa taas ng building, naambunan ng cement (puro ata), yan ang hirap tanggalin.

  5. Join Date
    Feb 2005
    Posts
    3,299
    #15
    Ah ok. IMO, go with the distilled vinegar like what Theveed posted. It will not damage your paint because mild acid lang yun. Wash your car, then apply the distilled vingar one section at a time using a soft sponge then rinse. Tingnan mo kung matatangal. if hot, buhusan mo on a small section nung vinegar then let it sit for a few mins, then rinse. See if this would do the track. If not, do the muriatic acid thing but like I said on a previous post, don't let is sit for long.

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how to remove hardened concrete?