I happen to have my data logger on for live data when I turned the car on and had a shake/engine rattle this am. 202000 miles currently part of EGR cleaned front piping and complete cleaning of the intake manifold along with spark plugs replaced 199000. I am the second owner I bought it from auction local trade in. Possible small decrease in coolant hard to say. I can post the data but there are 320+ data points. Just need you all to pick which ones you want to see then I will post the data at the time of the shake thank you.