Captainkirk
Old School Mopar Warrior
I used Dow-Corning. Top-drawer stuff. Can't say how long it cured for, though. Just for ***** & giggles, I will re-do the experiment...after waiting 24 hours.I've seen it happen when RTV does not cure completely. When it has set for 24 straight hours, it is impervious to fuel. That is the Permatex brand. I cannot speak for the lesser quality brands.
I hope I'm proven wrong. I like RTV.....