View Single Post
Old 08-11-2009, 05:48 PM
HoughMade's Avatar
HoughMade HoughMade is offline
Motorized Bicycle Elite Member
Join Date: Apr 2008
Location: Valparaiso, IN
Posts: 624
Default Re: how much rust is too much for inside your gas tank?

I have used hydrochloric acid based toilet bowl cleaner for this exact issue- but it is a lot stronger than you think- 1/4 strength or less would probably work. It will etch the tank. After the hydrochloric acid, a wash with a phosphoric acid metal prep will prevent flash rust and help prevent re-rusting overall.

Different approaches- I'm sure Pablo's will work, I just know that I have done it this way.
29/10ths cubic inches of raw power.
HoughMade at
Reply With Quote