octane

  1. CruelJung

    2008 5.3 Engine Oil/Filter + Octane Rating

    I drive a 2008 Yukon XL, 5.3 1500 Flex Fuel. The vehicle has 170,000+ miles on it and the AFM/DOD is both mechanically and electronically deleted. I am interested in doing my own oil changes and would like to know what oil and filter brands are most ideal for engine health and longevity. From...

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