Thread: Synthetic Oil
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Old 07-21-2019, 11:10 AM   #19
Jim Brierley
Senior Member
Join Date: Jun 2010
Location: Temecula, CA
Posts: 2,948
Default Re: Synthetic Oil

Synthetic is too expensive for me! I run 20-50 Pep Bros. or NAPA. I've run 15-40 in my diesels since '82, one ran 262,00 before I sold it, another 206,000 never any trouble. I run my '13 power stroke 7500 miles between changes, as per factory recommendation. Zinc is not important in A's, wasn't when new, isn't now because of the steel, not cast iron, cam and low valve spring pressure. Detergent is important, never run without it. Additives are not needed either, another waste of money.
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