Ford F-650 2001 Owner's Manual page 160

Maintenance and care
Checking engine oil level—7.3L Power Stroke engine
Refer to the Scheduled Maintenance Guide for the appropriate intervals
for checking the engine oil.
Check the engine oil level consistently and accurately. The following
procedure is recommended:
1. Start the engine and let it run until it reaches normal operating
temperature (the engine coolant temperature gauge indicator will be
near the center of the normal area between H and C).
2. Park the vehicle on level ground.
3. Set the parking brake and shift into N (Neutral) (automatic
transmission) or 1 (First) (manual transmission).
4. Turn off the engine and wait a few minutes for the oil to drain
completely into the oil pan.
5. Open the hood. Protect yourself from engine heat.
6. Locate and carefully remove the
engine oil level indicator (dipstick).
7. Wipe the indicator clean. Insert the indicator fully, then remove it again.
• If the oil level is between FULL and OPERATING RANGE, the oil
level is acceptable. DO NOT ADD OIL.
• Maintain the oil level between ADD and OPERATING RANGE on the
dipstick by adding oil as required.
• The distance from ADD to OPERATING RANGE on the dipstick
represents 1.9L (2 quarts).
• Oil levels above OPERATING RANGE may cause engine damage. Some
oil must be removed from the engine by a qualified service technician.
8. Put the indicator back into the engine and ensure it is fully seated.
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