We have been asked to look at a job where somebody has managed create a line of approximate 190 metres by 3" wide which consists of vegetable oil on granite stone and it's obviously soaked in.Now we have done a small test area using a product called ubik 2000 and to be honest although it's made it a little lighter the mark is still there. I have been told by someone that you can get a paste which you spread over the stone and it draws the oil out leaving it clean.Due to the nature of the area we cannot use any brick acid. Any advice would be great. The machinery we have used on the test area is a gx390 pressure washer and 20"'rotary surface cleaner
Thanks
