So tell me again why you would flush out a rusty tank and stick it back in the car when repops of this gas tank are available for about $100. If the inside is rusty its because theres no galvanizing left inside the tank to protect the steel.
I only had one tank boiled out and teflon coated on the inside before, it was something you could not get a repop for, no choice but to fix it. This tank will keep getting rusty crap in it no matter how u clean it.