What type of oil does a 2002 Mercury Sable need?
According to the 2002 Mercury Sable Owner Guide ( 5W-20 )
With engine oil filter change :
For the 3.0 litre " Vulcan " V6 , and its flex fuel version ( 4.5 U.S. quarts of 5W-20 engine oil )
For the 3.0 litre " Duratec " V6 ( 5.5 U.S. quarts of 5W-20 engine oil )