READ THE OWNERS MANUAL!!!
Tell her to FORGET EVERYTHING she knows about the 240D the minute she steps into the car.
Review the break-in guidelines.
Review the SPECIFIC oil requirements
REVIEW the maintenance manual!!!
Review how to check the oil
Get her 1 liter of oil to top off the engine with in case she needs it between now and the first oil change.
Make sure she DOES NOT leave it idling for extended periods! (more than 3-4 minutes)
Make sure she understands that the same engine and oil in her car goes up to 19,000 miles between changes in Europe. Changing the oil EARLY can result in damage or poor break-in for the new motor! The motor before it was put into the car was run-in at the factory in a test cell using a specific computer controlled system and dynometer. Once the break-in run was completed, all the fluids were completely flushed. A new oil filter and fresh break-in oil (Fuchs Titan GT1 0w30 MB229.51) were added and MUST be left in the new motor for the first 13,000 miles (or whatever the FSS dictates).
Emphasize the importance of STRICTLY following the FSS!
Did I mention, review the owners manual???
DB