G'day apple cider vinegar I hear is good for rust removal in fuel tanks if your patient enough as it takes time a day or two I think form what Ive read but the end result is excellent they say...Am yet to try it myself but from what I have read sounds like it works good..To get the whole how to do this ,just Google apple cider vinegar rust removal gas/fuel tanks...Cheers

Last edited by chris125; 23/02/14 06:14 AM.