Some of this may not be Mercedes Diesel specific, but then again, mebbe it is....
1). After 280k mi, is it harmful to park in park? i.e. should I *always* set my park brake and make sure the cable and system get regularly used? Does resting on the transmission in park on an incline "hurt the car"?
2). On a cold start, i.e. hasn't run in more than "n" hours and the oil is fully drained and at ambient temp (i.e. "thick")...is it better to let it idle at whatever RPM is wants to idle at, (i.e. < 600RPM), or is it better to hold the accelerator just enough to quiet the "diesel rod knock" that accompanies the well worn but still strong engine? No more than 800-900 RPM until I'm reasonably sure things are "moving smoothly"?
thx in advance!
-Barton
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