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Thread: Removing oil/grease stain from concrete driveway?

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    Removing oil/grease stain from concrete driveway?

    Was working on an old bike today and the fuel line split. Petrol ran down the bike and onto the concrete, carrying with it a lot of old built up oil and grease from the bike. Stain is about 30cm across.

    What are your tips and tricks for removing stains on concrete?

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    Member filbert's Avatar
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    Cement dust asap to soak up the oil then brush off.

    If it's had time to soak in then give some old school caustic oven cleaner a go.

    Don't go giving yourself chemical burns or I'll feel bad, use PPE and do a risk assessment etc 🖒

    Degreasers can soak in and leave their own residue which is lighter than the stain but you'll know it's there, don't use acid cleaners as they can react badly with the cement and even bubble and pop destroying the surface.
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    Member dwillia's Avatar
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    caustic soda and boiling water - apply dry caustic to stain and the boiling water from as far away as you can get
    the chemical reaction is exothermic and the caustic will break down oils and fats - unfortunately that includes your flesh so wear a face shield and gloves.

    actually - its fucking dangerous but it does work!
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    Member Halo_2's Avatar
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    CLR oil stain shit from bunnings or even $2 can of degreaser from supershit auto.
    RiDe F@sT.. HaVe F).. PlAy Ld

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    Quote Originally Posted by Halo_2 View Post
    CLR oil stain shit from bunnings or even $2 can of degreaser from supershit auto.
    I was looking into that before posting this question but have read some reviews online that says it leaves its own stain?

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    Quote Originally Posted by Speed Dealer View Post
    I was looking into that before posting this question but have read some reviews online that says it leaves its own stain?
    Haven't used just seen it at Bunnings, could start with the $2 can
    RiDe F@sT.. HaVe F).. PlAy Ld

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    Member GsxInShed's Avatar
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    Quote Originally Posted by Halo_2 View Post
    Haven't used just seen it at Bunnings, could start with the $2 can
    Yeh Repco $2 aerosol degreaser,,,works for mine.. leaves a waxy type of water detterent behind...Hot water to wash off...then soapy hot water rinse...(Dishwashing liquid n water...)

    'Kitty litter' if no cement dust ----is ok too.... leave on for a bit.... brush off..( reuse as required. next time..)
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    Fuel/petesorb if you can get it.
    Keep up to date! - https://www.emergency.wa.gov.au/
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    Member roomandu's Avatar
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    Last one I had on a driveway at home was dowsed liberally with Stupidcheap degreaser, covered very liberally with bickies sand and left over a few weeks of stinking hot days. Eventually swept up and dropped into the bin.
    Epic failure was that I had a super clean patch on an otherwise not so clean driveway lol
    "Do not spoil what you have by desiring what you have not; remember that what you now have was once among the things you only hoped for ..."

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