I have been looking at diesel fuel additives for my patrol.
After a bit of searching/reading here some products seem to come to the top of the list.
Chemtech Diesel Power Fuel Additive
Morey's Diesel Smoke Killer & Fuel Conditioner
Flash Lube Diesel Conditioner
Nulon Diesel Injector Cleaner
Wynn's Diesel Injector Cleaner
From memory I think I used Flash Lube in my old GQ occasionally but not positive on this.
Patrol has done 150,000 Km and to my knowledge has not had any additives through the fuel before. Just had a service and occasionally still get a bit of smoke out the back, not much though.
Looking at above list is there really any big difference in them and if so what would be the better to use.