<VV> seeking advice - cleaning up old oil-stains on concrete

[Dale Dewald]

Hello Andy,

On 8/31/2016 12:00, Andy K wrote:
> Guys,
> After having years of oil leakage onto the concrete driveway - I have mostly resealed the primary culprit.  I am looking for suggestions on how to clean up most of the existing oil fouling.
> Thanks,
I assume you have already wiped and scraped up as much as you can. I 
like to try and wick up as much of the spilled oil as possible using 
either oil dry [cat litter] or sawdust.  It helps to use a solvent such 
as kerosene to soak in and pull out the oil.  Do this several times.  I 
then use a strong detergent to clean up what remains with a water 
rinse.  Acid etching might be needed if you plan to paint over the stains.

Dale Dewald
Hancock, MI