Replacing The Oil Pan: Cleaning: Check
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
Start the engine and check for oil leakage.
Stop the engine. Give the oil time to run down into the oil pan. Then check the oil level.
Top up if necessary but do not overfill.
Wipe the engine compartment clean.
Install the lower engine cover.