here is a link
http://www.systemproducts.com/
we ran the £100 + some quid picasssooooo through an immision test just to see if out showed up,
it seems the cat is mucky,
as the old engine we took out had been getting through quite a bit of oil, looking at some of the sensor's and bits from the old lump they were all fouled up with oily goooo,
it was sudgestted we tried this stuff before buying a new pussy,
the can says put it in the tank with about 15lt's of fuel and drive the car normaly for 15 bto 20 minn's, then add fuel as you require,
so once my daughter has ran the tank down a bit we are going to give it a go,
just over 15 quid a bottle,
i run my 1.9TD XANT catless what a diference
regards malcolm