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1st oil change should be with in 500 miles. All fluids should be changed within 2000 miles. GM wont tell you that because some customers will be put off by it. Take a look at your drain plugs even with 1500 miles on them. they will be covered in shavings. I changed all of mine with 1500 miles on it. Even regular oil is good well over the 3000 mile mark. my 67 f250 had a 6000 mile interval. ad men decided they can make more money if they tell you to change it at 3000 miles. oil has come along way since then. I use Amsoil. Has 25,000 mile or 1yr change interval. 15,000 for the filter.
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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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