Hello David (and everyone else).

Aww my! When I get an idea I am impossible. Just like a child I cannot wait till I do it. So in less than an hour I am back with the results.

Right. The car is a 124 300D 2.5 Turbo (250TD original European description). 4 speed automatic transmission with 125.000 miles on it. Semi synthetic Castrol 10W-40 oil and half a tank of diesel (approx. 35 litres). The ambient temp. 62 Fahrenheit (17 Celsius). All accessories were switched off - t.m. radio and airblower/ A/C.

Because it is evening here the lights were on. I also did this test with lights off. I did 4 tests for each setting, starting from a complete stand-still till the speed of 60 mph with the lever in D all the time. It should be reminded that the auto transmission itself took about 1 or even 1.5 seconds to decide to find out what I wanted from it. The values are an average of 4 runs for each combination. The transmission changed gear at approx. 4500 RPM. I must say I didn't push the engine to its limits I think I could have done harder and better (but then again I plan on keeping this car for some time to come). The fuel filter element hasn't been changed in the past 2 years. Engine operating temperature approx. 85 degrees.

Here are the result 0-60 mph:

EGR connected, lights on: 14.6 seconds
EGR connected, lights off: 14.0 seconds

EGR disconnected, lights on: 14.0 seconds
EGR disconnected, lights off: 12.9 seconds

I read the codes afterwards, still #1 - no fault.