[concept]

Doing a block paving clean for a company which has some oil stains after a directors car leaked over the last few weeks, so oil is fairly fresh.

OT8 has been applied to the pre-wetted surface, scrubbed and left to dwell for 20/30 minutes, several times, and whilst there is a difference, it doesn't seem like it is shifting the lot.

Is it a matter of slowly slowly, catchy monkey, or is it advisable to try something else?

[Roger Oakley]

You could try Resiblock OR first it needs to go on a dry surface, then OT8 straight afterwards on the damp surface. What surface are you trying to get the oil out of? block, natural stone, concrete etc.

[Rob_Mac]

Down your way Rog, Tesco Stanwell.

Rob

[Rob_Mac]

Sorry Concept!

Rob

[Smudger]

Did you pressure wash after ??

I find ot8 excellent for oil removal, but you do need to give it a good scrub in (I use a stiff bristle hand brush - so it's on yer hands and knees 😁) then pressure wash off

I found that just rinsing with running water can leave ghosting or some residue in the brick

HTH

Darran

[Roger Oakley]

Down your way Rog, Tesco Stanwell.

Rob

Nice place  how long you down for?

[Roger Oakley]

Both OT8 & Resiblock OR need some sort of agitation so either as Darren said or a good stiff broom will do it.

[concept]

Scrubbed and scrubbed, will try again today.

Haven't used PW on it yet, according to instructions you don't need to?

[Roger Oakley]

Scrubbed and scrubbed, will try again today.

Haven't used PW on it yet, according to instructions you don't need to?

Forget the instructions where it says you don't need to P/W you do need to remove the stain remover as well as the old oil, P/W will be faster then using a hose, plus you have the pressure there to help.
If you've really got it reduced and you are still having problems with one or two spots etc, then you could go the poultice route.

[J.D]

Use brick acid concept. Wear gloves and glasses, pour some into a bucket and apply neat to surface using a brush. After 5mins pressure wash off or scrub off with a stiff brush and plenty of water. I have yet to come across anything that it will not shift!

[Roger Oakley]

And what strength is this "brick acid" you would intend to use?