Went to the junkyard and saw a total of 6 300E's with the M103 motor.

212k, 256k, 240k, 313k, 356k and like 168k IIRC. The 168k was new to the lot and it did not have an air filter...Looked under the flap and it was horrible...Guess it was ran w/o filter and got something into the pistons.
All very reasonable numbers!!

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k