Ford Mercury Villager 1997 Owner's Manual page 283

To close the hood:
1. Remove the prop rod from the slotted hole in the hood. Place
the rod in its retaining clip and close the hood with enough
force to make it latch. Be sure to oil the hood latch every six
months to maintain smooth operation.
2. Try to lift the hood after closing it to be sure it is securely
latched.
Engine Oil Recommendations
Ford oil specification is WSS-M2C153-G.
Use SAE 5W-30 motor oil certified for gasoline engines by the
American Petroleum Institute.
Do not use supplemental engine oil additives, oil treatments or
engine treatments. They are unnecessary and could, under certain
conditions, lead to engine damage which is not covered by
your warranty.
Maintenance and Care
279