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Old 08-17-2009, 09:37 AM  
Christian
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Default stains on driveway

Any way to remove stains on a concrete driveway left by power steering fluid leaks from a vehicle?

My brother's truck is leaking all over my driveway and he's got no money to fix his car. I told him to lay something down under the cradle for now to stop the bleeding in terms of staining my driveway...

Anything I can do to remove those stains?

Thanks!



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Old 08-17-2009, 09:50 AM  
CraigFL
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The first thing I would try is a pressure washer. Soaking them in Dawn dishwashing detergent may help too.



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Old 08-17-2009, 11:14 AM  
Nestor_Kelebay
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I spend more time cleaning than anything else.

The standard procedure for removing a dried up liquid or solid stain from a surface is to:

1. Dissolve the dried up liquid or solid in a liquid, and
2. Remove the soiled liquid.

So, the first step would be to dissolve the dried up power steering fluid, and I'd prolly use paint thinner to do that.

The second step would be to remove the soiled paint thinner, and you could do that by placing the end of the vaccuum hose of a wet/dry vaccuum cleaner directly on the concrete.

Alternatively, you could add some detergent to emulsify the soiled paint thinner and then clean up the emulsion with water. Basically, I'd suggest adding Simple Green, scrubbing it into the concrete to full mix the detergent in with the paint thinner. Now add water and scrub again to form an emulsion of paint thinner droplets suspended in water. You can now clean that emulsion off the floor with a sponge and bucket of water.

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Old 08-17-2009, 11:26 AM  
yesitsconcrete
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franmar makes some good stuff,,, another possibility's making a poultice from diatomaceous earth ( swimming pool supply ) & solvent ( we use maptha )
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Old 08-19-2009, 12:57 AM  
macro01
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paint remover is what i use on removing the stains...if you have no paint remover, kerosene would do it as well

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Old 08-19-2009, 05:35 AM  
yesitsconcrete
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good point - you may find the kerosene residual stain far less annoying
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Old 09-02-2009, 02:18 AM  
andyrichard01
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Try a pressure washer to clean. Soaking them in Dawn dishwashing detergent may help too.dissolve the dried up power steering fluid, and I'd prolly use paint thinner.



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