today something weird happened. I get lost on some back roads, and when I finally got home I figured out I had driven about 250km ~155mi and all that only used 1/4 tank of gas! that is about 2.5 times my usual gas milage, and the vehicle seems to be running better, other than the fact that whenever i stop i smell burning oil and see a bit of smoke, but i cannot see any smoke when the hood is open
also the engine temperature was lower than usual (about halfway up the guage, it is usually near the high side)