[N8N]

car started running like crap again. Actually threw a code for the first time that I've ever seen after I gunned it coming out of a parking lot into heavy traffic, but it cleared itself... #4 misfire was all I could get. About 90K miles.

Ran a bottle of Techron through next fill up, then the next one I used Seafoam.

Car runs 100% better. Lesson learned. Good fuel is NOT enough, periodic fuel system cleaners are REQUIRED for this car. I always buy name brand fuel, usually Shell as that's the cheapest good station near me. Occasionally Sunoco (yes I know Sunoco is not top tier but I've never had an issue with it.) I'm on the second set of injectors too (replaced under warranty before I bought car) with #6 on its third.