unscrew filter and push it up past all the wiring and crap and remove it through your engine compartment. then feed the new one down the same way, install.
good luck and have fun
I'm assuming it is the same as the ( 1996 ) Mercury Cougar 4.6 liter V8 : With engine oil filter change : ( 5.0 U.S. quarts should put you almost to the full mark )
According to my Chilton's Auto Repair Manual : For the 3.8 liter V6 engine in a 1991 Mercury Cougar : With engine oil filter change : ( 5.0 US. quarts )
The Owner Guide for the 1999 Mercury Cougar shows ( 5.8 quarts with filter change ) for the 2.5 liter V6 engine
According to the 2000 Mercury Cougar Owner Guide : With engine oil filter change : The 2.5 liter V6 engine takes ( 5.5 liters of 5W-30 engine oil )
According to the Owner Guide : With engine oil filter change : 5.0 quarts ( 4.7 liters ) of engine oil
According to the 2002 Mercury Cougar Owner Guide : The 2.5 liter V6 engine takes : With engine oil filter change : ( 5.5 litres / 5.8 US. quarts of 5W-20 engine oil )
According to one of Fords websites : For the 1972 Mercury Cougar , 5.8 liter / 351 cubic inch V8 engine : ( Motorcraft FL-1-A engine oil filter )
6 ---------------------------------------------------------------------------------------------------- According to the 2000 Mercury Cougar Owner Guide : With engine oil filter change : The 2.5 liter V6 engine takes ( 5.5 liters of engine oil ) * the first answer is not mine , the corrected answer is , Helpfull *
On a 1997 Mercury Cougar : The engine oil dipstick is on the drivers side of the engine ( for the 3.8 liter V6 and the 4.6 liter V8 )
The 3.8 liter V6 engine in a 1991 Mercury Cougar has a timing CHAIN
According to the 1996 Mercury Cougar Owner Guide : With engine oil filter change : The 3.8 liter V6 engine takes ( 5.3 US. quarts , 5W-30 PREFERRED ) * the engine oil level dipstick is used to determine the exact fill requirement
Is this a trick question , because there wasn't a 1998 model year for the Mercury Cougar The 1997 Mercury Cougar , with the 3.8 liter V6 engine , has a ( 18.0 US. gallon tank The 1999 Mercury Cougar , with the 2.5 liter V6 engine , has a ( 15.4 US. gallon tank )