According to the 1996 Mercury Villager Owner Guide :
With engine oil filter change :
The 3.0 liter V6 engine takes :
( 4.2 U.S. quarts / 4.0 liters , 5W-30 preferred )
5W-30 is the preferred oil ( according to the 1996 Mercury Villager Owner Guide )
4.2 quarts
4.5 quart
I assume it is the same as the ( 1996 ) Mercury Villager : With engine oil filter change : ( 4.2 US. quarts of 5W-30 engine oil )
without oil filter 3.7 quarts with oil filter 4.2 quarts
According to the ( 1996 ) Mercury Villager Owner Guide : With engine oil filter change : The 3.0L V6 engine takes ( 4.2 U.S. quarts / 5W-30 PREFERRED )
According to the 2000 Mercury Villager Owner Guide : With engine oil filter change the 3.3 litre V6 engine takes : ( 4.0 litres / 4.2 US. quarts of 5W-30 engine oil )
According to the 1997 Mercury Villager Owner Guide : With engine oil filter change the 3.0 liter V6 engine takes : ( 4.0 liters / 4.2 US. quarts of 5W-30 engine oil )
According to the 1998 Mercury Villager Owner Guide ( 5W-30 ) is the preferred oil
I looked at the Mercury Villager Owner Guides from ( 1996 , 1999 , and 2002 ) With engine oil filter change : Each Owner Guide shows ( 4.2 U.S. quarts )
10w30
5W-30