Alright, I have performed my 1st Annual Spring Seafoam Fling. I first dumped a bottle in the crank case and ran it for about 60km and then dropped the oil. It was very thin and dark. Man did it ever help with the sound of the engine. The lifter noise vanished and it generally sounds quiet now. Then I drove the van until the empty light came on and performed an "Italian Tune-up" on it. My reasoning for this step was so it could clean all the way from the back (tank, lines,etc.) and burn out some of the sh!t that had been in there for 18 years. I drove it HARD and at times I caught myself doing 140 as the pedal actually seemed to work now. Then I put about 30 litres of fresh diesel in and 2 ounces of Howes and drove it home. Already it was a very noticable change. There was no more sputtering when I hit the pedal. Then I changed the fuel filter (to get rid of any crap that came from the tank) and put about a bottle and a quarter of Sea Foam into the filter. Started it up and it smoked a little, but nothing gigantic. Then I took it out for another 50km rip down highway 2. Very responsive now. I can actually accelerate onto the highway and not have people giving me dirty looks. Then I went back to the gas station and refilled with another 50 litres and 2 ounces of Howes (also went to pay for said diesel and realized my wallet was still on the work bench at home...awesome
). I am going to take it out for another burn tonight as I have to reaset all my radio stations now. Overall I am really impressed. I would recommend doing it to every Deli just to get it running the way it should. I don't think it is the snake oil that others suggest. It seems to make everything work better by cleaning the crap out of it. Me likey alot.