Vauxhall Corsa Owner's Manual page 200

Engine oil level and consumption
All engines consume oil for technical
reasons. The engine oil consumption can
only be assessed after driving a long
distance, and may be above the specified
value during the initial stage (run-in
period). Frequent driving at high revs
causes oil consumption to increase.
Therefore, check the engine oil level,
particularly before undertaking a long
journey.
198
Engine oil level check,
topping up engine oil
The illustrations show checking and
topping up of various petrol and diesel
engines.
The oil level must be checked with the
vehicle horizontal and with the engine
(which must be at operating temperature)
switched off. Wait at least five minutes
before checking the level to allow the
normal oil accumulation in the engine to
drain back into the oil pan.
Important: It is the owner's responsibility
to maintain the proper level of an
appropriate quality oil in the engine.
To check the level, remove the oil gauge
(dipstick), wipe it clean and reinsert it as far
as it will go. At the very latest, top up if the
oil level has dropped to just above the "add
oil" mark MIN.
The oil level must not go above the upper
mark MAX on the dipstick. Excess oil must
be drained or extracted by suction. If the oil
level does go above the mark MAX there is
a risk of damage to the engine or catalytic
converter.
The amount filled must be between the
MIN and MAX marks – see page 238.