Your done, plain and simple. The cp4 will grenade at some point. It may take 10k miles, but it will go, and most likely take your injectors with it. I believe Bosch found even so much as a quart of gas added to 30 gallons will wipe a cp4 out. This is not the olden days of idi's running 2200 psi injection, cp4's run 30,000+ psi injection. And you can be pretty well assured Ford will not cover it under warranty as they know what gas contamination does to them. Your best option is to have it towed to a shop and file with your insurance company BEFORE it grenades, and takes the rest of your fuel system with it. Several have made this mistake and it can cost 10-12 grand to fix it if you let it go until the cp4 lets go.