Want this question answered?
at the bottom of the oil pan under the car.
14mm
The oil drain plug is located under the front end of the car, on the rear side of the oil pan.
On a 1991 Mercury Cougar : The oil pump is INSIDE the oil pan ( the oil pan is bolted to the bottom of the engine )
In a 1995 Mercury Cougar , 4.6 liter V8 engine ( 5W-30 ) * according to the Owner Guide
Bottom of the oil pan.
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 )
The oil pan is at the bottom center of the engine, and the plug is on the back of the oil pan, facing the rear of the car. It can only be removed with an open end wrench because of the limited space between the plug and the exhaust pipe.
5w 30
5w30
2 possiblities: 1) worn piston rings, or 2)leaking valve seals
near the oil filter