Great road trip car. Next you'll be back asking if the motor is supposed to run at 4,000 RPM at cruising speed. You'll be pleased to learn that, yes, the M103 is a little beast designed to RUN HARD. Change out the fluids and filters and hit the road. Enjoy!

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Michael

1988 300 SL (5 Speed)
1994 E320 Wagon
1997 C230