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Re: Synthetic Motor Oil: Extended Drain Interval - or Not?
Posted to Castrol Forum on 3/1/2017 14 Replies

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I have dozens of pictures like that. My own Ford Econoline was at 312,000 miles when I finally got rid of it. It never had an oil drain interval shorter than 6,000 miles. Most drains where over 7,000... Login to read more.

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