Hello, just got my first Benz. 4 speed 240d with 131.000 miles. Couple of newbie questions. My oil pressure gauge climbs up to max at startup and never varies. Is this normal? The car starts first bump in morning after below freezing overnight temps. Second question is that the car doesn't have a coolant recovery tank, just a hose from radiator going to a hole below radiator to bleed outside. Noraml or missing tank?