It might not hurt to gradually bring the oil pressure up, instead of just cranking on a dry motor. Have one person hold down the "STOP" lever, while the other person cranks with the key. Do this until the oil pressure gauge stabilizes at 3. Then release the STOP lever, and let it fire up.

This isn't ideal for the starter, but it will ensure that everything is bathed in engine oil before you start idling.

__________________
-1985 300TD - 324k mi on chassis. MB "Tauschaggregat" 617 motor + 4-speed conversion
Alaska Roadtrip 2009
-2002 E320 Wagon - 197k mi
-1998 E320 Wagon - 310k mi - retired