premium engine oil
According to the 1999 Mercury Cougar Owner Guide : ( 5W-30 ) is used in the 2.0 litre four cylinder engine and the 2.5 litre V6
5w 20 ======================================================== The above answer of 5W-20 is correct if it is a 2001 or 2002 model year according to the Mercury Cougar Owner Guides ( 1996 , 1997 , 1999 , 2000 guides show 5W-30 from the factory )
For a Mercury Cougar , 2.5 litre V6 engine : According to the 1999 to 2002 Owner Guides : ( Motorcraft FL-820 engine oil filter )
5w20
The Owner Guide for the 1999 Mercury Cougar shows ( 5.8 quarts with filter change ) for the 2.5 liter V6 engine
5w30
How many courts of oil does Car take and what kind of oil
According to the 1999 Mercury Cougar Owner Guide ( 5W-30 ) With engine oil filter change : The 2.0 litre four cylinder engine takes ( 4.5 US. quarts of 5W-30 ) The 2.5 litre V6 engine takes ( 5.8 US. quarts of 5W-30 )
10w30 Your oil cap on the engine block will have it printed.
5w30
mobil 1 full synthetic 5w-30
SAE 5w-30 any major brand conventional or synthetic oil.