I just got my 525i back from the shop after a new head and radiator. Boy was that costly but it runs a whole lot better now. What I'm wondering is where on the Temp Gauge is the best temp for the engine to operate at it's peak. Before it went to the shop the needle went straight up at 12:00 o'clock and would stay there. Now the needle gets about 10:00 o'clock. Where is the best place on the temp gauge for the M20 engine?
Johnny B