Mixed measurements when checking oil
Audi S8 - 2007 - 5.2L
When I check the oil dipstick when the engine is cold I get a very full oil reading, a touch overfull! When I drive to the gas station, let the car set for a few minutes while filling up, then check the oil, I get a reading at the top of the middle dotted pattern, 3/4 full.
The manual says "at operating temperature, let the car idle for a few minutes, then wait a few minutes before you check the oil." What does that mean? Run the engine till the coolant is temp is 90 (operating temp), then turn off and wait a few minutes, or just turn the engine on for a few minutes?
What's the accurate way of checking oil level on the S8? Cold engine, Short drive, Confusing Instruction Manual?