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re: How do you remove grease from concrete?
Posted on 5/19/13 at 3:20 pm to aVatiger
Posted on 5/19/13 at 3:20 pm to aVatiger
Pressure washer won't work unless you're spitting upwards of 40,000 PSI.
Yep, 40,000 PSI which can eat through concrete to the rebar.
ETA: rebar spelling error
Yep, 40,000 PSI which can eat through concrete to the rebar.
ETA: rebar spelling error
This post was edited on 5/19/13 at 3:22 pm
0
Posted on 5/19/13 at 3:22 pm to aVatiger
Find a paint store or commercial cleaning supply store that stocks a grease emulsifier. Works magic.
Posted on 5/19/13 at 3:36 pm to GO TIGERS GO
quote:
grease emulsifier
just google'd this stuff.. wow
can you recommend a certain type?
Posted on 5/19/13 at 4:25 pm to aVatiger
Try some ice.
Posted on 5/19/13 at 4:49 pm to aVatiger
Skeet on it each day for a year then pressure washer. 
Keep degreasing it but it will always look like a greasy spot. Try Gunk or try tire foam as a last resort.
Keep degreasing it but it will always look like a greasy spot. Try Gunk or try tire foam as a last resort.
Posted on 5/19/13 at 4:56 pm to oldcharlie8
quote:
pressure washer
Posted on 5/19/13 at 5:06 pm to Trout Bandit
quote:
Try some ice.
what you did there..
Posted on 5/19/13 at 5:18 pm to aVatiger
Pour some Cajun Brown on it & let soak, pressure wash off 
Posted on 5/19/13 at 5:24 pm to Nascar Fan
Laquer thinner from the hardware store - DONE
Posted on 5/19/13 at 5:51 pm to aVatiger
The kind I used before was made by Coronado paint but I'm sure others would work as well
Posted on 5/19/13 at 5:54 pm to GO TIGERS GO
I've used dawn a few times and had pretty good luck with it. Put it on the stain and let it sit for a while. Like a day or so and then spray it off.
ETA: may have to repeat a time or two.
ETA: may have to repeat a time or two.
This post was edited on 5/19/13 at 5:55 pm
Posted on 5/19/13 at 6:44 pm to aVatiger
I've been working to get a house ready for sale, so I just dealt with this last week.
Dawn and water. The key is to use a stiff nylon brush / push broom on it. Make it suds up, brushing in different directions.
Let it sit 30 min.
Rinse off with a garden hose (don't blast)
Spray a diluted mixture of Chlorox Outdoor Liquid Bleach and let sit for 20 or so minutes. (the Chlorox Outdoor has an extra active ingredient than regular bleach)
Pressure wash.
30 years worth of oil and grease spots are gone. Concrete looks new.
Dawn and water. The key is to use a stiff nylon brush / push broom on it. Make it suds up, brushing in different directions.
Let it sit 30 min.
Rinse off with a garden hose (don't blast)
Spray a diluted mixture of Chlorox Outdoor Liquid Bleach and let sit for 20 or so minutes. (the Chlorox Outdoor has an extra active ingredient than regular bleach)
Pressure wash.
30 years worth of oil and grease spots are gone. Concrete looks new.
Posted on 5/19/13 at 6:56 pm to CoastieGM
wow, that seems like a pretty good method.. i got all that stuff but the chlorox outdoor..
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