I have noticed about 10-20 degree decrease when using AC, all other temps stay the same - then goes back up when AC is turned of. Anyone else see this?
My 2018 GT idles at about 1000 when cold until oil get just to green, which is understandable. But if I shut it down for about ten minutes or more, I have a good minute or two at high idle even though it is still warm. Wouldn't be so bad with a manual because you can slip it, but with an auto, especially in reverse, it is a pain. Is this normal?