Tried the "Removing Rust with Apple Cider Vinegar" method so popular on youtube.
the plan was to remove the rust with vinegar, neutralize with baking soda and then pour Red-Kote.
And I'll tell you, the vinegar works GREAT! removed almost all the rust from what I can see through the fuel hole.
But here is the problem, as I tried to neutralize the tank with water/baking soda combination, the rust comes back immediately!
I tried this process twice, once with distilled water/baking soda combo and once with tap water/baking soda combo with no luck.
so as of now, my gas tank looks worse than it did before.
What gives? how did all the other youtubers get the rust off?
What you have is surface rust.
You can try using some light weight oil,,,3in1,,,and a couple hand fulls of medium size gravel,,,1/2". Make sure you can get the gravel out of the tank either through the filler hole or the petcock opening.
Put about a cup of oil in the tank with the gravel,,,make sure it is just gravel, no sand or dirt,,,gently swirl the mix all around. Keep doing till the rust is gone. If you shake to hard you can dent tho tank.
Dump out the oil and gravel. Now use a paint thinner to remove the oil and as soon as this dries put the coating chemical in.
Hope this helps.
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