is at most 50% acid when in its “retail” form
add a quart of said wheel acid to 5 gallons of gas, and it becomes about 5% hydrochloric acid, making it about as stong as CHEAP weel cleaner … you know that stuff you bought in a hurry the one day and it left all the brake dust on your wheels ??
5% is toilet bowl cleaner, at worst it would clean a tad bit of corrosion off the inside of the fuel tank