Tried and tested way to remove power steering oil from granite block driveway?

WIAWSNB

As title.
Friend's beautiful silvery granite block drive, which has had power steering fluid dripped on it. The blocks have a rough texture.
He's tried caustic soda, and other stuff.
Any suggestions for summat that will work?
Thanks.

grumpy_codger

Acetone is used widely for degreasing and removing fat spots (combined with loads of absorbing tissue).

Also, it's worth trying white spirit or petrol.

nologo

I have found "washing soap powder" liberally shaken over the spill then brushed in with a stiff broom, left for several days works very well on concrete drives might be worth a try? 

WIAWSNB

Thanks folks - both sound worth trying, especially as they shouldn't cause any greater issues.
I'll pass that on.

WIAWSNB

Anyone know if power-steering oil is similar base to normal oil?

Ayr_Rage

I wouldn't be using anything stronger than soap powder or liquid detergent, as above wet it and brush it in and then rinse off with a power washer.

WIAWSNB

Ayr_Rage said:

I wouldn't be using anything stronger than soap powder or liquid detergent, as above wet it and brush it in and then rinse off with a power washer.

Thanks.
I was considering white spirits brushed in, as that's surely a solvent? If that does 'thin' the oil, then much can be mopped up, and the rest more easily tackleable using detergent whilst still thinned.
Or, any thoughts on brush cleaner - the type that removes oil-based paint from brushes, but is also water-miscible so the brushes can be finished off with water and washing up liquid afterwards?
I'll ask the guy for a spare block to practice on!

stuart45

Try a paste of baking soda and leave it on for a few hours.
Was the granite sealed?

Eldi_Dos

Whenever any engine oil gets on the block paviours in our parking area's I just visit the grit bin at the bottom of the road and bring back a bucket of grit. This I use to create a dam round the stain then pour bleach onto offending area,leave for a while then more bleach,once dried in just brush up the grit and dispose of.
The area might look a bit "clean" compared to other area's but it soon weathers in, especially at this time of year.

WIAWSNB

stuart45 said:

Try a paste of baking soda and leave it on for a few hours.
Was the granite sealed?

No. And it's heavily textured. The guy has tried caustic soda, but ineffectively. 

WIAWSNB

Eldi_Dos said:

Whenever any engine oil gets on the block paviours in our parking area's I just visit the grit bin at the bottom of the road and bring back a bucket of grit. This I use to create a dam round the stain then pour bleach onto offending area,leave for a while then more bleach,once dried in just brush up the grit and dispose of.
The area might look a bit "clean" compared to other area's but it soon weathers in, especially at this time of year.

Bleach clears oil?