There is a new product released by Liqui Moly.
LIQUI MOLY - Motor Oils, Additives, Car Care - Additive for blockages
"The additive is added before fuelling every 2,000 kilometres. The contents of a 250 ml can is enough for 50 to 70 litres of diesel fuel and is suitable for all vehicles with a diesel particulate filter, as long as they don't have an electronically controlled additive tank system for filter regeneration, as is the case in Citroen and Peugeot vehicles."
Was wondering, since I am already adding 2T oil in my Montero, will this also help in keeping the diesel system clean? Or not necessary if I use 2T every fill-up?