Ford Motor Company reports that the company’s switch from recommending 5W-30 viscosity motor oil to 5W-20 viscosity motor oil has saved 700 million gallons of gasoline since 2001. By reducing load and internal friction, lighter viscosity 5W-20 motor oils reportedly increase fuel economy by a half mile per gallon. In addition, Ford reports its use of 5W-20 oils has reduced carbon dioxide emissions by about one million metric tons a year. Of course you can, but the question should be should you? And the answer to that is NO. Put exactly what the manufactures says to put in this engine. No manufacture recommends 10W-40 anymore. Engines today are built at such close tolerances that the use of this weight oil is a no longer recommended. You fail to mention the year, but more unless the vehicle is faily old, you more than likely should use 5W-30. Look in your owners manual or call a Ford dealer.
Ford Motor Company reports that the company
5 w 20
The motor oil, in your 1998 Ford expedition, should be put in the oil fill tube. The oil fill tube should have a That labels it as the oil fill tube.
According to the 2007 Ford Expedition Owner Guide ( 5W-20 )
It depend on what oil do you like using. I personally used Castrol 10W40. On my 1998 Ford Expedition XLT.
5 W 30 ( according to the 1999 Ford Expedition owners manual )
According to the 2000 Ford Expedition Owner Guide ( 5W-30 )
It should tell you on top of your oil fill neck on the engine. My Ford Escape does.
I would buy 6 quarts of motor oil. But only put in 5 quarts of motor oil. And check. Only add more if needed.
According to the 1998 Ford Expedition Owner Guide ( 5W-30 ) * with engine oil filter change , 6.0 U.S. quarts of 5W-30 engine oil
5 w 30 ( according to the owners manual )
According to the 1997 Ford Expedition Owner Guide ( 5W-30 ) * with engine oil filter change , 6.0 U.S. quarts of 5W-30 engine oil
On a 2000 Ford Expedition ( 4.6 and 5.4 ) The engine oil filler cap is on an extension tube on top of the passenger side engine valve cover . It's near the front of the valve cover