According to the 1999 Ford Expedition Owner Guide : With engine oil filter change : ( 6.0 U.S. quarts )
Bad head gasket , warped or cracked cylinder head
The 1999 Ford Expedition owners manual shows 6 quarts / 5.7 liters of engine oil with filter change
Check your head gasket. In addition, if your head gasket is bad or in need of replacing have your heads check for any cracks in them.
6 U.S. quarts with engine oil filter change
To change the oil pan gasket on a 1999 Chrysler Cirrus, disconnect the negative cable from the remote battery jumper. Then remove the oil drain plug to drain the oil pan. Next, remove the drive belt and exhaust cross-pipe. Remove the dipstick tube and the starter motor before pulling off the oil pan gasket.
To change the oil pan gasket on a 1999 Mazda Protege DX, remove the bolts holding it to the bottom of the motor. Take the old gasket off and clean the area where the gasket sits with a gasket cleaner. Place a gasket sealer on the outside lip, then put in the new gasket. Carefully replace the pan and tighten the bolts, being careful not to let the gasket overlap itself.
For a 1999 Ford Expedition , 4.6 liter V8 : With engine oil filter change : ( 6.0 U.S. quarts of 5W-30 ) according to the Owner Guide
When you replace your oil filter it come with a new gasket. Just make sure when you remove / replace the old oil filter the oil gasket comes out with it.
How do you change gear oil in a 1998 expedition?"
According to the 1999 Ford Expedition Owner Guide ( 5W-30 ) * with engine oil filter change , 6.0 U.S. quarts of 5W-30 engine oil
According to the 1999 Ford Expedition Owner Guide : ( 5W-30 engine oil for the 4.6 and 5.4 liter V8 engines ) ( with engine oil filter change , 6.0 U.S. quarts of 5W-30 )