good you not have to get it at the "monopolet"..vas there not a limit oif 2 bottels pr person number....
Monopolet...Systembolaget... no limits at all, amount as well as the price! No vinegar here, only alcohol.
Why not use HG rust converter? Works like a charm! Used it on a badly rusted oil tank and it cleaned it out in half an hour. One bottle might do a tank, but it's not super expensive.
Was a chromed tank as well and it didn't damage it at all. Probably will eat your paint if you don't rinse it right away.
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I have read so much about vinegar as a soft way to derust tanks inside without risk of eating thru the metal or harm the paint.
I got the idea on Saturday morning, took my car to the supermarket and bought 5L vinegar. Understood that I was too cheap and went for additional 13L on Sunday and filled tank completely. I verified tank volume when I could fill it with 17.5 bottles that most likely has a little extra in each 1L bottle (+ 3-4cl)
I have a complete tank clean/derust and sealing kit (Restom Super kit) that I planned to use. But I changed my mind when reading about eventual difficulties with sealers and the tank was rather good, no holes what I have seen (yet).
Vinegar in tank 48 hours in total (28 hours completely full). Saved vinegar in a spare plastic gas tank for my red avatar tank. Flushed tank with warm water plus brushed inside with a bottle brush.
After a few times with tap water, drained almost all water, filled with 2L conc. alcohol (for car windscreen washer tank) that diluted water to more alcohol than water. Drained tank again and direct 0.7L white spirit and 2 spoons of motor oil and shaked the tank. Out with that and in with 0.5 L gasoline and shaked the tank again and drained tank for last time.
Mounted a new fuel petcock, tank on bike and filled it with Shell V-power. Started bike and let it idle for 5-10 minutes. No signs of water in fuel..