Truck Follies

So I took my beloved truck in for an oil change on Monday, and as always they promptly changed my oil and sent me on my way. And I ran some errands and the check engine light went on, so I went back. And they ran the diagnostic and changed the spark plugs, wires and fuel filter, then they sent me on my way. So I drove up to visit a friend and on my way home, check engine light came on again. So I brought it back the next day after work, and they gave me a lovely loaner - very swift. Some of the possibilities were kind of dire - needing a new engine, which I did not. Thankfully. This truck has 194,000 miles on it so it's just getting broken in and I really want it for at least another 100,000 miles. Which will take another couple of years.