For a 1998 Mercury Mountaineer with the 5.0 liter / 302 cubic inch V8
With engine oil filter change
( 5.0 U.S. quarts of 5W-30 engine oil , according to the Owner Guide )
According to the 1998 Mercury Sable Owner Guide : With engine oil filter change : The 3.0 liter " Vulcan " V6 engine takes ( 4.5 quarts ) The 3.0 liter " Duratec " V6 engine takes ( 5.5 quarts )
According to the 1998 Mercury Mountaineer Owner Guide : With engine oil filter change : The 5.0 liter V8 engine takes ( 5.0 U.S. quarts of 5W-30 )
5 quarts, 5w30
4 quarts
6.5 quarts
5 quarts
About 4 quarts.
5
8 UK quarts
five quarts
7.5 quarts
5 quarts.