From MK4 owners manual;
Oil Check
We recommend that you check the engine oil level every time you refuel.
Park the vehicle on level ground.
Turn off the power system. You can check the oil level without the engine having
run beforehand. If the engine has been running, wait approximately three minutes
before you check the oil.
1. Remove the dipstick (orange).
2. Wipe the dipstick with a clean cloth or
paper towel.
3. Insert the dipstick back all the way into its
hole.
4. Remove the dipstick again, and check the
level. It should be between the upper and
lower marks. Add oil if necessary.
(If the oil level is near or below the lower mark, slowly
add oil, being careful not to overfill.
The amount of oil consumed depends on how the
vehicle is driven and the climatic and road conditions
encountered. The rate of oil consumption can be up
to 1 litre per 1,000 km/625 miles.
Consumption is likely to be higher when the engine is
new.)
Adding Engine Oil
1. Unscrew and remove the engine oil fill cap.
2. Add oil slowly.
3. Reinstall the engine oil fill cap, and tighten
it securely.
4. Wait for three minutes and recheck the
engine oil dipstick.
NOTICE
(Do not fill the engine oil above the upper mark.
Overfilling the engine oil may result in leaks and
engine damage.
If any oil spills, wipe it away immediately. Spilled oil
may damage the engine compartment components.)