A friend who knows about cars (worked on them for years) was very surprised that this care was in such good condition. He pointed to the transmission which had no signs of fluid leaks at all...perfectly clean. I mean the care does look good (except the oil addition area ) and seems to run well. It engine off coasts without complaint, etc.
My first guess would be that I need two new oxygen sensors. I have heard that they wear out and I do not know if/when they were changed. They looked really good from the outside when I got the car but...?
Car has new synthetic oil, clean fluids. K&N air filter (mostly because it is cleanable but a friend got it for me)