According to the 1998 Lincoln Continental Owner Guide ( 5W-30 )
With engine oil filter change :
( 5.7 liters / 6.0 U.S. quarts of 5W-30 )
What type of oil does a 1998 Lincoln Continental use
5w30
5w30
10 30
5w30
regular 10w 30 motor oil
5w-30
5w40 or you can also use 5w30
SAE 20W-50 Synthetic Motorcycle Oil
5w30 Any premium brand high detergent oil.
The 1998 Ford Expedition Owner Guide shows ( 5W-30 )
10W-30 should be the best type to use.