oil on sealed concrete

[Barry M 73]

I have a couple of fresh oil stains to remove off of a customers driveway. The driveway is sealed, but I don't know with what product. Hopefully because it's sealed the stains come up easy, but if not what cleaner can I use on it and how much pressure can I apply without removing the sealer. I didn't promise them anything because I've never had much luck with oil stains on concrete. Thanks guys.

[One Tough Pressure 580]

Try wiping the stain off first. You will need to use a cleaner to do this, but start off weak, unless you know what sealer it is.

Many sealers require a methylene chloride to strip, but if they used a cheap acrylic, then sodium or potassium hydroxide will take it off. Use caution.

[Barry M 73]

Thank you very much for your input Alan.