1 Remove the plug on the oil pan with a wrench and drain the oil into a drain pan. Disconnect the negative battery cable. Place a support jack under the crankshaft pulley.
2 Remove the support bolts on the front and rear engine mounts, along with the hold-down brackets on the two rear refrigerant/heater pipes.
3 Disconnect the front and rear transaxle bolts and the brace holding the transaxle to the engine. Unhook the connector on the oil level sensor.
4 Loosen the bolts on the oil pan, working from the outside towards the center. Remove the pan and scrape away the old seal with a paint scraper. Make sure that all the parts are clean, and that the old gasket seal has been completely removed.
5 Put a new gasket in place and seal it with silicone sealer. Replace the oil pan and tighten the bolts in sequence, starting with the inner bolts and working out.
6 Replace the connector on the oil level sensor, the front and rear transaxle braces, the exhaust inlet pipe, the crossmember bolts and crossmember, and the front and rear engine support through-bolts.
7 Slide out the support jack and lower the vehicle. Fill the engine with clean oil. Mercury recommends that the optimum oil for the Villager is SAE 5W-30.
The oil pan covers the bottom of the engine.
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 )
At the bottom of the engine, right side, near the front, by the alternator.
The oil pressure sending unit is located right above the oil filter.
The same way you do on any other vehicle. Drain the oil, remove the filter, replace, refill.
According to the 1997 Mercury Villager Owner Guide ( and one of the Ford websites ) The 3.0 liter V6 engine takes the ( Motorcraft FL-839 ) engine oil filter
5W-30 is the preferred oil ( according to the 1996 Mercury Villager Owner Guide )
There is generally no reason to replace an oil pump unless the engine is being rebuilt. Low oil pressure is usually the result of worn internal engine bearings, not a bad oil pump. The oil pump normally produces much more oil pressure than the engine needs.
According to the 1998 Mercury Villager Owner Guide ( 5W-30 ) is the preferred oil
10w30
5W-30
4.2 quarts