rgatijnet1 wrote:
I have restored several old Classic vehicles and old fuel tanks can be a problem. Most fuel tanks are coated/plated to prevent rust but that only lasts for so long. Once rust starts to form in a fuel tank, just flushing it out WILL NOT solve the problem. "Rusticles" will continue to form in the tank, even if it is full, unless it is flushed and the interior is coated/sealed with one of the numerous products on the market for this purpose. These "rusticles" are very fine particles and they will clog most filters and can get past most filters that are not designed for fuel injected vehicles.
Lab tests on this says it is carbon, not iron oxide. (that is what rust is)