Quote:
Originally Posted by BKsCC
There's this stuff called Evap-O-Rust that's about $25-$30 for a gallon at tractor supply. It's really good stuff and works better and faster than vinegar, and won't accidentally discolor metal red from sitting too long (It'll darken metal though if it sits for over 24 hours). I just used it to do my tank. It's reusable for several uses so don't just dump it away when you're done. Run it through some cheesecloth to catch the chunks of rust and then re-bottle it.
|
I have also used this with great success. I have been using the same gallon container of Evap-O-Rust for over 10 years now. If there's flaky rust in the tank I let it sit for a day or so, turning it every few hours to make sure all surfaces get soaked. If it's not bad it may only take an hour or so. Make sure to fill it back with gas fairly quickly because once it's cleaned to bare metal it will flash rust pretty quickly if you let it sit empty.