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dexos is a label GM came up with to scare owner into buying a certain brand oil. Dexos1 is not Mobile1 it is the lowest bidder semi synthetic GM can get. for a few months it might be mobil1 for a few Castrol and so on. You do not have to buy a oil that has the dexos label on it. As long as the oil meets or exceeds their spec. and most do they can not void your warranty. Any full synthetic exceeds their spec. unless your buying joe crackhead recycled oil you will be fine.
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real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1
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