Thread: Which oil is best for a 390?
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Old 10-14-2005, 03:56 PM
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1975Ford
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Currently using on my 360 and 390 FE's, the summer month's the engines running on 10w40 Chevron Supreme and in the winter month's 5w30 Chevron Supreme. Oil changes with new filters done at around 3000 miles.
 
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