I think the mechanic FILLED up my oil. I noticed today that my fuel mileage seems to suck, so I set to try to figure out why. No drips on the driveway, so it's not an obvious leak. The exhaust smells a little rich, so I pulled the spark plugs and the two plugs closest to the coil pack were bathed in oil. I also saw that two of my plugs were eroded down to the insulation, so I re-gapped them just to get by until payday then I'll replace them. None of the spark elements looked wet, but they were definitely unevenly gapped for some reason. Checked the oil and it's definitely full; I may need to pull out a few ounces.
I'm not sure about getting into injectors with this car. I have no problem on an old mechanically injected diesel, but this electronic whiz bang is a different beast altogether. I usually run a high octane fuel and have never gotten so much as a knock, but is it worth it? Is there anything I should run through the tank to clean varnish out of the lines and injectors? Is that even a thing? I miss my old carbureted Beetle and Corolla. Anyways, after I sort out the plugs (wires were replaced 18k miles ago) how else could I improve the efficiency of this car? Yes, I still need shocks, struts, and an alignment, I'm sure the latter would definitely help. But as far as the motor goes, anything else? Thanks all.
Phil