Does my car need premium gas?

Question

I drive a 2000 Ford Expedition -2WD- with a 4.6 liter V8. It has about 78,000 miles on it and is pretty well-kept. Would it do any harm if I use the lower grade gas (87octane) in it? Or does it need premium gas?

Answer 1

read your  manual, it will tell you the correct grade.

Answer 2

go by what the owners manual says.

Answer 3

Check the owners manual. It will tell you what grade of gas is needed.