So there is clearly oil in my coolant reservoir at this point. I've also noticed oil coming out of my coldside where the sensor is that's known for popping out. No check engine lights. I only get smoke after driving down the freeway for awhile then getting off and going at the offramp. I have noticed my vacuum isn't as high on the gauge at idle. Temps are fine. I'm in AZ and it's very hot. Any thoughts?