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International Automotive Technicians Network
Re: eliminating DFM 2020 K1500 Chev 5.3
Posted to Open Discussion Forum on 10/1/2025

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I always use the factory required oil, which I assume will be Dexos in this case, and I change it at 5,000 miles. I'm an old Ford guy, and I use Motorcraft 5w-20 in them.

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