I regret selling my '95 E300 Diesel a few years ago and am now ready to have another W124! I found a '94 E320 that is very promising; it has been owned by an enthusiast and has lots of records...but it has 250k miles. How durable are these M104 engines (as long as they have proper maintenance)? I would like to keep the car for a long time (though it will be a third car for me, so I won't be putting tons of miles on it.) Let me know your thoughts on high-mileage gas engines. Thanks!