Adding Engine Oil; Engine Oil And Filter Recommendations - Mercury Grand Marquis 2002 Owner's Manual

Do not overfill the engine
with oil. Oil levels above this
mark may cause engine
damage. If the engine is
overfilled, some oil must be removed from the engine by a qualified
service technician.
7. Put the indicator back in and ensure it is fully seated.

Adding engine oil

1. Check the engine oil. For instructions, refer to Checking the engine
oil in this chapter.
2. If the engine oil level is not within the normal operating range, add only
certified engine oil of the recommended viscosity. Remove the engine oil
filler cap and use a funnel to pour the engine oil into the opening.
3. Recheck the engine oil level. Make sure the oil level is not above the
normal operating range on the engine oil level indicator (dipstick).
4. Install the indicator and ensure it is fully seated.
5. Fully install the engine oil filler cap by turning the filler cap clockwise
until three clicks can be heard.
To avoid possible oil loss, DO NOT operate the vehicle with the
engine oil level indicator and/or the engine oil filler cap removed.

Engine oil and filter recommendations

Look for this certification
trademark.
SAE 5W-20 engine oil is recommended.
Only use oils "Certified For Gasoline Engines" by the American
Petroleum Institute (API). Use Motorcraft or an equivalent oil meeting
Ford specification WSS-M2C153–H. SAE 5W-20 oil provides optimum
fuel economy and durability performance meeting all
requirements for your vehicle's engine.
Maintenance and Specifications
DO NOT OVERFILL
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