The 2015 Ford Expedition has a 3.5 L V6 engine and the recommended oil for it is a synthetic SAE 5W-30. You can use either full synthetic or a blend but either way they're both better for Your engine than a conventional will be. That's not saying that conventional is bad and You can definitely use it if that's what You have available. You'll just gain a bit of extra engine protection and You may even notice a boost to fuel economy when using a synthetic. What's more important than the type of oil is that You change it at the regular intervals which is either 5,000 miles for conventional and closer to 7,500 with synthetic. -
Pat T.
January 2, 2020
The 2015 Ford Expedition's 3.5L V6 engine uses SAE synthetic blend 5W-30 motor and has an oil capacity of 5.7 quarts with a filter change.
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