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#1868797 - 04/23/10 09:08 PM Cleaning decades old oil stains off concrete floor
Mr_Accord Offline


Registered: 01/24/07
Posts: 446
Loc: LBP
o.k pretty much a good portion of the concrete floor in my garage is covered with heavy oil patches from decades worth of auto repairs and I'm kind of getting tired of it, it just looks really bad from the driveway with no car in there. Does anyone have a good method or know of a good product to clean it up or bring it close to being spotless. I want to eventually apply a heavy duty paint coating to the floor that is chemical resistant, but i have to clean up the oil mess first without having to put a new layer of concrete applied over top.

Thanks


Edited by Mr_Accord (04/23/10 09:09 PM)
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#1868804 - 04/23/10 09:14 PM Re: Cleaning decades old oil stains off concrete floor [Re: Mr_Accord]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18173
Loc: Dallas,Tx USA
I`ve heard bleach may work. Never tried it though.
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#1868806 - 04/23/10 09:15 PM Re: Cleaning decades old oil stains off concrete floor [Re: Mr_Accord]
Bluestream Offline


Registered: 09/13/03
Posts: 5758
Loc: Waterloo, ON
There is no way to clean it up. I rented commercial space a while ago where a machine shop used to be, The floor was full of oil stains/ I rented a large orbital floor sander (wow very dusty work) and even with taking off a layer of the concrete the oil stain was still there. We put down vinyl floor for our office, and the oil stains "telegraphed" though the vinyl over a year or two,
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#1868827 - 04/23/10 09:29 PM Re: Cleaning decades old oil stains off concrete floor [Re: Bluestream]
BobFout Offline


Registered: 03/23/09
Posts: 3189
Loc: Indiana
Originally Posted By: Bluestream
There is no way to clean it up. I rented commercial space a while ago where a machine shop used to be, The floor was full of oil stains/ I rented a large orbital floor sander (wow very dusty work) and even with taking off a layer of the concrete the oil stain was still there. We put down vinyl floor for our office, and the oil stains "telegraphed" though the vinyl over a year or two,


What about those "plastic" or "rubber" sealants for concrete?
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#1868884 - 04/23/10 10:19 PM Re: Cleaning decades old oil stains off concrete floor [Re: BobFout]
jorton Offline


Registered: 07/04/03
Posts: 3094
Loc: San Antonio, TX
You can wet the floor and blow off excess water with a leaf blower. Then dust the damp floor with the cement that has no gravel, sand or stones in it. Wait 48 hours, and sweep the floor.
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#1881426 - 05/05/10 10:29 AM Re: Cleaning decades old oil stains off concrete floor [Re: jorton]
tchguy Offline


Registered: 10/28/08
Posts: 16
Loc: ca
I've had some success using ATF, Simple Green and kitty litter to remove the worst of the stains on my driveway. What I did was to apply a thin coat of ATF on the stains, broom it back and forth till it looked dark. Next cover the ATF coated stains with a (thin) layer of kitty litter. Broom for a while, remove kitty litter. Apply another layer of kitty litter, broom a while and remove. Repeat until kitty litter doesn't turn dark. The last step is soaking the stains with Simple Green. Broom the simple green over the stains for at least 10 minutes, then rinse away.

This made a dramatic improvement in how the driveway looked. I repeated this treatment series the following weekend. I can still see the stains if I look for them, but at a glance it looks pretty good.


Edited by tchguy (05/05/10 10:30 AM)

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#1882161 - 05/06/10 02:53 AM Re: Cleaning decades old oil stains off concrete floor [Re: tchguy]
Shannow Online   content


Registered: 12/12/02
Posts: 39896
Loc: 'Stralia
I used to have a powder product.

Commercial powder cleaner that we used to mix with water to degrease panels before painting. Would rinse completely off with water.

would make a poultice of this stuff, trowel it lightly on, then put a payer of cling wrap over it.

Worked great, but 20 years of not using it, and I'm lost.

Dad used to use lime for the same thing.
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#1887471 - 05/11/10 04:34 PM Re: Cleaning decades old oil stains off concrete floor [Re: Shannow]
DaleW Offline


Registered: 09/07/06
Posts: 19
Loc: Wisconsin
I have never tried this product. but will some day.
can't hurt.

http://www.pour-n-restore.com/

let us know if you try it!

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#1900065 - 05/22/10 10:34 PM Re: Cleaning decades old oil stains off concrete floor [Re: DaleW]
Papa Bear Online   content


Registered: 08/11/05
Posts: 7051
Loc: Leamington, ON, Canada ..... r...
When I worked at a garage in the early 60's, the mechanic would pour battery acid out of the old batteries and slosh it around with a pushbroom. Let it "bubble" for a while and hose it off.
Floor cleaned up quite nicely.
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#1900948 - 05/24/10 01:13 AM Re: Cleaning decades old oil stains off concrete floor [Re: Papa Bear]
Malo83 Offline


Registered: 08/08/08
Posts: 2001
Loc: Cali

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#1901364 - 05/24/10 02:19 PM Re: Cleaning decades old oil stains off concrete floor [Re: Malo83]
PandaBear Offline


Registered: 08/05/02
Posts: 14220
Loc: Silicon Valley
I have tried laundry detergent (Tide powder) and it clean up a lot, but is not completely clean even when I pour some water over the laundry detergent and let it sit overnight.

Concrete has pores and there is no way to clean it up 100%, especially it is decades old. Your best option is to apply an acid cleaner and then coat it with a sealant or paint afterward, and add flakes of some types to break up the pattern so it won't be that noticeable, which is exactly what the garage sealant does.
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#1901390 - 05/24/10 02:49 PM Re: Cleaning decades old oil stains off concrete floor [Re: PandaBear]
scurvy Offline


Registered: 02/19/07
Posts: 2372
Loc: Chicago IL USA
The old timers at the turbine repair shop used to tell me that if you mix powdered Tide with just enough water to make it slushy then trowel it on (like Shannow said) it will pull all the oil out of the cement. Covering with cling film to keep it wet for a few days may not be a bad idea. Sweep up what you can and spray the rest with water.

Of course the real problem with cleaning the oil stains out of your cement floor is that you'll make clean spots which stand out. grin

Instead of cleaning the oil spots, you should get a few gallons of used diesel oil, pour it over evenly and let soak for a week. Then the entire floor will be the same shade.
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#1924436 - 06/16/10 05:38 AM Re: Cleaning decades old oil stains off concrete floor [Re: Mr_Accord]
97prizm Offline


Registered: 05/25/05
Posts: 750
Loc: USA

In my parents garage the same problem existed. Years of oil stains. I use pour-n-restore. You pour the liquid on the stain spread it with a putty knife and let it dry into a powder. Once dry sweep up the powder. It works really well.
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#1926498 - 06/18/10 01:23 AM Re: Cleaning decades old oil stains off concrete floor [Re: Malo83]
RoGuE Offline


Registered: 02/05/08
Posts: 680
Loc: Atlanta, GA
I use some powder cleaner, like Comet, let it sit for a few minutes and sweep it away. Works every time.
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#1933119 - 06/24/10 09:47 PM Re: Cleaning decades old oil stains off concrete floor [Re: RoGuE]
stuntboy79 Offline


Registered: 05/04/10
Posts: 155
Loc: PA
We use Alfer "green stuff" and it is a very effective cleaner/ degreaser.
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#1959155 - 07/19/10 08:53 PM Re: Cleaning decades old oil stains off concrete floor [Re: Malo83]
ranger52 Offline


Registered: 08/20/05
Posts: 5
Loc: waxahachie, tx
Try applying some lacquer thinner on the oil spot. Immediately after the lacquer thinner, put some oil dry or kitty litter on the spots to absorb the lacquer thinner and the dissolved oil. Leave it a day and sweep it up later.

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#1960441 - 07/21/10 04:30 AM Re: Cleaning decades old oil stains off concrete floor [Re: ranger52]
John_Corey Offline


Registered: 07/19/10
Posts: 156
Loc: San Jose, California, United S...
Hi ranger,

I wonder if this procedure might work on oil-stained concrete. My brother in-law parked his MKII in my driveway and, as it befits a vehicle of British pedigree, it left a considerable puddle of oil behind. Unfortunately, the oil has already been absorbed into my brand-new driveway, and all the scrubbing with soapy water did not help much.

Cheers,
-J

Originally Posted By: ranger52
Try applying some lacquer thinner on the oil spot. Immediately after the lacquer thinner, put some oil dry or kitty litter on the spots to absorb the lacquer thinner and the dissolved oil. Leave it a day and sweep it up later.

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#1960993 - 07/21/10 02:28 PM Re: Cleaning decades old oil stains off concrete floor [Re: John_Corey]
CourierDriver Offline


Registered: 12/27/09
Posts: 4945
Loc: Tn.
we use to use tide with bleach powder , worked like a charm
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#1962009 - 07/22/10 10:54 AM Re: Cleaning decades old oil stains off concrete floor [Re: CourierDriver]
ranger52 Offline


Registered: 08/20/05
Posts: 5
Loc: waxahachie, tx
In my experience, the lacquer thinner and litter will remove oil stains from concrete.

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#1962195 - 07/22/10 01:28 PM Re: Cleaning decades old oil stains off concrete floor [Re: CourierDriver]
ranger52 Offline


Registered: 08/20/05
Posts: 5
Loc: waxahachie, tx
In my experience, the lacquer thinner and litter will remove oil stains from concrete. You will notice the place at first. However, I do not remember my attention being called to those places after a while.

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#1968947 - 07/28/10 11:41 PM Re: Cleaning decades old oil stains off concrete floor [Re: stuntboy79]
Craig750 Offline


Registered: 03/25/10
Posts: 174
Loc: NSW, Australia
I use standard petroleum engine degreaser first.

Then I mix in a slurry of clothes washing powder and water. You want the slurry to stay in place and hold the water

Then a stiff brush and scrub it in for a few minutes and then let it soak for a few hours to a couple of days. Keeping the area wet.

After a good soaking I then hose it down. You can see the stains when it is wet but after drying it is hard to see them.

WARNING WILL ROBINSON: I AM NOT A CHEMICAL ENGINEER AND DO NOT KNOW IF MIXING DEGREASER AND LAUNDRY SOAP POWDER IS DANGEROUS.

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#1981162 - 08/09/10 08:42 PM Re: Cleaning decades old oil stains off concrete floor [Re: stuntboy79]
morris Offline


Registered: 08/24/08
Posts: 3681
Loc: ks, wichita
go somewhere where they are building a new road, from the ground up, not just repaving, ask the boss if he knows where you can find fly ash. its a gray power. put it on the floor sweep back and forth, pick up dump out, and add some to the floor let it set and sweep some more.

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#1981167 - 08/09/10 08:50 PM Re: Cleaning decades old oil stains off concrete floor [Re: stuntboy79]
morris Offline


Registered: 08/24/08
Posts: 3681
Loc: ks, wichita
to, papa bear, in the late 60s i worked with an old mech. he used battery acid to clean old pot metal carbs that sat outside. but you had to have running water to rinse the acid off at just the right time. BUT it doesnt work on aluminum

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