Hello! I'm fettling my first doughnut lamp. There seems to be some rust or residue inside the tank but I couldn't find any good way to get rid of it. What methods do you use in such cases? Best regards, Piotr
Or put it with stones and some solvent on the tank (it could be kerosene), put the tank on your car. It will do the hard work if you don't want to shake it by hand, but it will take much more time unless you drive on bad roads.
If the tank is steel, then there may be rust issues. If it is brass, then rust is doubtful. Old kerosene leaves behind a "black nasty" that I have had to use a HOT citric acid/water solution with #4 steel birdshot as the scrubbing agent to remove it. I also use a powerful surfactant detergent called Marine Clean. Mixed 50/50 with boiling water it will degrease ANYTHING down to the shine. POR Marine Clean This is the "cleaning" first step in coating a fuel tank with US Standard Fuel Tank Sealer. POR US Standard Fuel Tank Sealer On lamps with SOUND but rusty founts this process will PERMANENTLY eliminate rust issues. It is used for restoring old motorcycle and auto fuel tanks that cannot be replaced. One quart of sealer will do 75-80 lamps depending on size. I use it on Coleman products because even the old ones had brass sides with steel bottoms. The bottom is where the trouble usually lies. I'm working off my 2nd quart at present. I HATE RUST!!! Bob
Thanks guys! Juan: We have here very poor roads so your idea is worth trying Bob M: My tank is steel of course. Thanks for the tips, as it's very important to protect the tank from the returning rust. Unfortunately we don't have POR15 products here in Poland so I'll look for something similar. Piotr
