Quote:
Originally Posted by Travelin' Texans
I doubt seriously that the engine would know the difference between 20w & 30w, but use whatever yours recommends. If you live in very warm areas the 30w would be better & in cooler areas the 20w.
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That is exactly what Ford told me. My oil cap says 5w-20 but the owners book says 5w-30. SO I called Ford and they said what you said. SO for me its 5x-30
Jerry