I used this stuff onece on my mustang. simply because it says on the bottle its safe to be use on every tankful and also on the back of the bottle is a list of different auto manufacturer that uses this cleaner. How true is that?. and last night I read on one of the post here that redline sl-1 cleaner can decompose the nylon sock on the fuel pump, is there anything I should worry about? did I do any damage to my fuel system? or am I just paranoid? like my wise always tells me when it comes to my car. just when I thought I found a good safe product to use on my car, something always comes up.. thanks for any help.