by Ferrous_Head » Thu Mar 22, 2018 6:47 pm
Only just read this thread.
From my experiences (I'm in Australia too)
The best method for cleaning rust and rubbish from gas tanks. Molasses ,believe it or not. It does take some time. Badly rusted tanks may take you a week to clean. But when your finished there will be nothing but bare metal left. it works better than any of the acid or alkaline chemicals I have tried. Google it. No harsh chemicals, no BS, the stuff just works.
I tried the KBS system (3 part process) and followed their directions TO THEE LETTER I mean OCD style followed. The coating was applied to a steel tank I used on a race bike. I never used anything but Unleaded gas. 100 octane Shell A intended for airplane use supplied in new 20 Litre drums. No ethanol or Methanol ever went near the tank.
The lining failed within 12 months.
Don't line your tanks, clean them with molasses every couple of years if you need to.
Molasses is very cheap. Buy a small jar and mix it with hot water (about 25% molasses to water.). Throw some rusty old junk in there, nuts bolts whatever you have and try it. Then come back and tell me about your "Blast Off" Hydrochloric/Sulphuric acid bases chemicals and two hundred hours of shaking a tank with gravel.bolts inside compares.
"I know only too well the evil that I propose, but my inclinations get the better of me."