I was reading in this forum today about people having to wait 5-10 seconds for their dashboard glow plug lights to go out before they start the car. The light on my 1978 240D takes 75 seconds when the engine is warm, and 20 seconds or less when it is cold (winter temperatures outside). I'll live with these time if they're normal. If not, does anyone know what kind of problem they signify? As always, many thanks for any insights this bunch of experts can offer.