I have a 2006 S40 with T-Tec seats, light gray. They are stained from water and grease in the back. What is the best way to clean them. I have read that ordinary products dont work... some recomen orange based cleaners, others steam cleaning, others say there is a special Volvo product but nobody knows its name or where to find it.

Please help me as i am trying to sell my car to get an XC60 so i need it to be detailled ASAP

I am not sure where u live, but if you can get wet suit cleaner or can get acess to it, it will work. I have done one car and also a Nissan with similar seats. I use wetsuits at work and we use something called 500 psi http://www.leisurepro.com/prod/AQUWBW8.html?ci_src=14110944&ci_sku=AQUWBW8 . Normally when cleaning that type of material, you get staining from "dried proteins", so you want to clean with something that has an enzyme that eats the proteins