Regular oil vs synthetic
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Junior Member
Joined: Feb 2014
Posts: 6
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From: Canada
Regular oil vs synthetic
I have a 2005 F150, 5.4L 4X4. Wanting to know if I should Change regular oil to another like high mileage or synthetic? . I have no engine issues, blow a little smoke when start up. I have 155,000 kms or 96,000 miles on the engine. I do regular changes 5,000 km or 3,100 miles. What should I do and why? Thanks
Senior Member
Joined: Dec 2006
Posts: 43,533
Likes: 817
From: Joplin MO
You should use 5W20 Motorcraft semi-synthetic and a Motorcraft FL-820S filter. Full synthetic won't do anything for you, especially with those oil change intervals. Use exactly what Ford recommends in a 5.4 3V for least problems.
Technical Article Contributor
Joined: Oct 2006
Posts: 1,770
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From: Michigan
Exactly.