Have a look at he two attached links (one for a WYNN'S product and the other for PENRITE).
Of the two, I used the Penrite purely because it was readily available for my dad to pick up at the auto parts store.
I notice that the Penrite product claims a greater reduction in soot flash point than the Wynn's but that's neither here nor there in my opinion

Halfords | Wynn's Diesel Particulate Filter Cleaner 325ml

http://www.penriteoil.com.au/product...d_products=685