[W126 Coupe] don't use high mileage oils

[Dick Spellman]

If you operate the starter with the coil wire to distributor tower
disconnected for any length of time WITHOUT the coil wire grounded you can
destroy the coil and or ignition module.  Another point is it typically
takes 3-5 cycles at 5 seconds or so of cranking each to show some level of
oil pressure on the dash gauge.  I mention the short starter cycles here as
well where it is a good idea to give the starter a few seconds between
cranks to cool down a bit.  So, next time ground the coil wire before
cranking the engine over and limit the starter time to 5 seconds or so to
preserve the life of the starter.

These are just my methods as a DIY'r Richard.  If I have left the 380 to sit
for a week or more (most often during the winter) I always ground the coil
and run the starter until I see the pressure needle move after several
cycles.  So, if you feel uncomfortable watch your mechanic next time the oil
is changed on the 380 to see how he does this without damaging the timing
chain and or rails where the chain tensioner always loses pressure after an
oil change.

Dick