Cleaning sealed concrete after gasoline spill

[gawashman 15]

A customer accidentally spilled gasoline on the driveway. Problem is that they had the concrete sealed with a white pigment sealer. Now there is a slight brownish stain. I am thinking of using house wash mix with surface cleaner. Do not really want to use anything too strong as a result of the sealer. Any ideas???

[Paul Kassander 26]

That sounds like a good place to start. You may need to use a light degreaser to remove it. If that doesn't work you can try a light mix of oxalic acid.

[Beth n Rod 1,279]

Good to see you again Paul! :sunshine:

Beth

[Paul Kassander 26]

Thanks Beth glad to be back.

[TNRoofCleaner 16]

Sounds to me like it is more of a strip and reseal. Photos can help a lot

[gawashman 15]

Just an update...Neither ox nor degreaser seemed to help. I suggested that the area could be stripped and re-sealed, if they could determine what sealer was used. Homeowner will discuss matter further among themselves.