FWIW I use Mobil1 and change it once or twice a year. I buy it in quarts when it’s on sale. Usually can get 5 quarts plus filter at AutoZone for about $30. With two additional quarts it’s still under $40. I change it myself as it literally is the easiest vehicle ever to do. Also lube the front at the same time. It’s cheap and easy to do so I usually do it about 5,000 miles. I expect there’s no downside to waiting longer but it’s a hard working engine and why not be “nice” to it.
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