Overdrive ( basically the 4th gear in your 4 speed automatic transmission )
It allows you to drive on the highway / freeway with the engine running at
lower RPM's . The engine is quieter and will get better gas mileage
The O/D OFF light will come on in your dash if the switch on the end of your
gear selector lever is pushed . Pushing the switch again will allow the
overdrive to be used , as will shutting off the vehicle and the next time it is
started the overdrive is allowed which is the normal position
It should be the same.
According to the 1998 Mercury Villager Owner Guide ( 5W-30 ) is the preferred oil
10w30
The 3.0 litre V6 engine in a 1998 Mercury Villager has a timing BELT
on my 1999 ford mercury villager its on top of transmission under the van
The distributor in a Mercury Villager is the round thing at the front of the engine with the six spark plug wires attached to it.
R134
According to one of Fords websites : The 1998 Mercury Villager uses the ( Motorcraft RS-519 radiator cap ) It is a ( 13 PSI cap )
The Villager has an electric fan and does not use a "fan belt".
The 1998 Mercury Villager 3.0 liter V6 engine has a timing BELT ( according to the Gates website , they make timing belts etc. )
Bottom front of engine.
I was looking at the 1998 Mercury Villager Owner Guide ( and one of the Ford websites ) and they both show the spark plug gap as ( .034 inch )