The check engine light went out Friday night, but I took it in anyway, since it had been on/off/on/off. They cleared the code, drove it around, the check engine light didn't come back on, so they declared it fixed. Yeah, thanks. $137 bucks for nothing.
The other thing they said was that there was a high alcohol reading of 42%. It's a "flexfuel" engine, and should be able to take E85, and almost precisely a year ago we put in one tank as an experiment (lowered the mpg, but otherwise the same). Regardless, the bubbly non-tech on the phone recommended I run a couple tanks of "good" 93 octane gas (don't they raise the octane by adding ethanol?)
We've gone to this shop for decades and had no problems, but this doesn't make me want to return.