4 Answers

bulletman

Karma: 324255

Hydrochloric Acid will take off oil stains in a jiffy, it is quite safe to use, always wear gloves and safety glasses no matter what product you are using.

14 years ago. Rating: 5
Comment this answer

melandrupert

Hi bullitman I thought Hydrochloric would eat in to the concrete!

commented 14 years ago

bulletman

g'day mel, no it wont, i use it all the time , where it cleans the oil stain is nice and clean back to the original cement/ concrete. the acid is a weak acid not like sulphuric which wlii dangerously burn. pour the acid on the oil stain, use a large brush and scrub the area then wash off with a hose and walla stain is gone. it bubbles and fumes when poured onto the concrete, don't be alarmed this is normal. in OZ it is sold in 2 -4 litre plastic containers. you can use a degreaser from the auto shop but this is a more expensive way of cleaning, they come in pressure pack cans. ---- it's 2.20 am time for beddy byes good night.

commented 14 years ago

ed shank

Karma: 316611

A product called "Metso" made specifically for that. Works great. Not many places carry it, try a feed and grain outlet.

14 years ago. Rating: 4
Comment this answer

eggplant

Karma: 385820

You could try oven cleaner.

14 years ago. Rating: 2
Comment this answer

j.alanhutchinson

Karma: 8450

If it is not all the way settled into the concrete, you may want o use an absorbent first to try and at least soak up some of it. They make a product just for this or you can use cat litter. Then trying pressure washing the area and if all else fails, sand blast it