I know on my 98 2.0L it is under the rear passenger side. Undo the clamp and remove the old filter. Keep an eye on the directional arrow, and install the new filter. Retighten the clamp and you should be good to go. Only took us about 10 mins or less to change. We did ours at the hardware store parking lot as we had to buy a new clamp. Our was pretty rusty, and it was less then a dollar to buy new clamp, rather then have the old one brake while trying to tighten.
The oil filter on a 1998 Mercury Mystique is changed by lifting the vehicle up on ramps, placing a drain pan under the filter, and unscrewing it. A new filter is then put in place and torqued down.
Filter is internal and does not need service. There is a drain plug on the bottom of the trans. case for fluid drain. Refill thru dipstick tube.
Replacing ERG Valves in a 1998 Mercury Mystique is fairly hard because it requires great precision to avoid blocking the EGR passage.
Duck tape should do the trick
right behind the air filter toward the engine
under the rear passenger side of the car, pretty easy to change.
were is the iac locate on a 1999 mercury mystique
According to Gates ( they manufacture timing belts etc. ) starting with the 1998 model of the Mercury Mystique - it shows to inspect the timing belt at 120,000 miles and replace if necessary on the 2.0 L - 4 cylinder engine
4.5 quarts ( 4.25 liters ) with oil filter change
According to the 1998 Mercury Mystique Owner Guide : ( 61.5 litres / 16.2 U.S. gallons )
According to the 1998 Mercury Mystique owners manual : For the 2.5 liter V6 engine : With engine oil filter change : ( 5.8 U.S. quarts / 5.5 litres )
According to the 1998 Mercury Mystique Owner Guide : With engine oil filter change : The 2.5 liter V6 engine takes ( 5.5 liters / 5.8 U.S. quarts of 5W-30 )