Reny,
As Lee had mention,engine temp.on 400E-E420
and 500E-E500 run a little bit warmer than the
rest of 124's.That problem is gone thru the
installation of Jim F's"cool harness" or
Italian Benz's"piggy back's.My car had never
seen 100 C.since I install Jim F's CH.
Another reason,400E and E420 are much cheaper to mentain than 500E-E500.There, you got couple
of reason now.