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How to remove fresh oil from concrete carport
Posted by: Dennis S
Date: March 31, 2022 11:08PM
It’s about 3 days old. I can’t get to Home Depot for awhile for whatever they have. I don’t trust random methods on YouTube.
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Re: How to remove fresh oil from concrete carport
Posted by: Racer X
Date: March 31, 2022 11:22PM
oven cleaner, the good stuff. It's essentially lye, which turns oils/fats into soap.

But you put it on asphalt, it will eat it.



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Re: How to remove fresh oil from concrete carport
Posted by: Acer
Date: March 31, 2022 11:32PM
I've had some success with dawn dish soap and a good scrub, assuming you've blotted up all the standing liquid. Might be worth a try before you reach for something stronger. Dawn won't have any chance of harming the surface.
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Re: How to remove fresh oil from concrete carport
Posted by: samintx
Date: April 01, 2022 08:11AM
Dish washer stuff works.
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Re: How to remove fresh oil from concrete carport
Posted by: mikebw
Date: April 01, 2022 08:27AM
I'd soak up the top layer with sawdust or cat litter, then liberal application of dish soap, let sit and then scrub with stiff brush. Repeat.

Oven cleaner sounds easier.
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Re: How to remove fresh oil from concrete carport
Posted by: Microman
Date: April 01, 2022 08:33AM
Go buy the cheapest Kitty Litre you can find.... Open package a sprinkle on top of stain.

Put on you oldest pair of Tennis Shoes, use the bottom of shoes to scratch the kitty litter into the surface. Get all of the spots of oil, and sweep up powdery mess, and you are done.
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Re: How to remove fresh oil from concrete carport
Posted by: Filliam H. Muffman
Date: April 01, 2022 09:26AM
It can matter a little what the finish is. For a very smooth surface, alternate between a solvent like paint thinner (or solvent based concrete cleaner) and dish soap and/or baking soda in expanding areas.

For slightly rough to brushed surfaces, clay based kitty litter/oil absorbent and dish soap and massage rotating on the ball of the foot or hard force on an orbital sander/polisher.



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Re: How to remove fresh oil from concrete carport
Posted by: Paul F.
Date: April 01, 2022 10:37AM
I'll second Microman...
Diatomaceous earth (kitty litter) to soak up every last bit.
Also used in machine shops to clean oil and oil-based coolant spills... called "Floor-Dry" in the college shop.

If anything remains soaked into the concrete, I'd use a dishwasher detergent powder sprinkled on, and then slightly dampened... let soak a few hours, then use kitty litter to soak up and sweep up.



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Re: How to remove fresh oil from concrete carport
Posted by: jonny
Date: April 01, 2022 11:34AM
Dawn dish soap does the trick. Leave it soak for a week or two.
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Re: How to remove fresh oil from concrete carport
Posted by: Thrift Store Scott
Date: April 01, 2022 12:24PM
Quote
Microman
Go buy the cheapest Kitty Litter you can find.... Open package a sprinkle on top of stain.

Put on you oldest pair of Tennis Shoes, use the bottom of shoes to scratch the kitty litter into the surface. Get all of the spots of oil, and sweep up powdery mess, and you are done.

I'll cast another vote for the Microman method. We'd use that at the gas station where I worked for fresh spills, occasionally following up afterwards with a product called "Crete Sweep" that I suspect was nothing more than portland cement powder in a shaker can.



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