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Posted by Pop on August 9, 2005, 6:27 pm
This is also my experience. It's possible you might
have to actually bleach an area, depending on how far
down the pores it got; that fluid is very thin.
Pop
>I just did this on my own driveway to clean up a
>persistent oil leak on
> my car that I finally fixed. I tried all of the
> standard water based
> (environmentally green) degreasers with little
> success. Muriatic acid
> is dilute hydrochoric acid and will etch the
> concrete, but will not
> dissolve or digest the oil. What you need to do is
> go to an auto parts
> store or your local K-mart, Walmart, or Target and
> get a can of the
> petrolium based engine degreaser. I had great
> success using the Gunk:
> Engine Brite degreaser. Dont buy the foaming one it
> didnt work well.
> The original gunk is a reddish petrolium base product
> that if you spray
> on evaporates very slowly. Let it sit 15 - 20
> minutes and scrub with a
> steel brush if you have one and then rish with water.
> This worked
> fabulously on my driveway will several year old oil
> stains. After the
> oil stain removal I used an old broom to brush on a
> 50/50 solution of
> water/bleach and let dry to brighten the cement.
>
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