Hello, I own a 2004 Mach 1 and i replaced these plugs literally 7,000 miles ago. Around the threads i put anti seize and they look old lol. I did research on the red part which looks strange, but It happens to be octane booster/injector cleaner that caused the plugs to look funky. The primary o2's on the cats are pretty sparkly red as well. Any suggestions? Shouldn't the anti seize last longer?
I picked up a new set of spark plugs and more anti seize.

 

plugs visually age quickly. Is the car running fine??? Lay off octane booster and cleaners and stuff, it's all garbage. Quality gas will keep her running top notch.

 

Yeah the car is running good, especially after putting in new plugs. I run 91 octane. It's the best gas we get out here. I wish we had like 93, but California is just so stupid. They always bitch about being fuel efficient, but they don't realize better quality gas will actually help out a lot of vehicles on the road.

 

+ 1 on octane booster being crap. also, new plugs already come coated with corrosion inhibitor and dont require any additional anti-seize.

 

Thanks ill keep that in mind when I replace them next time.