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change trans/diff fluid??
I have 55k on my z now and was wondering if i should use royal purple products to change my trans/diff fluid...also is it a must w my current miles? or is it a good idea to do it now anyway
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01 m6 z28 - lid / lt headers w 3' ory no cats / flowmaster cb w 3' dmh e-cutout / nelson pcm tune / pro 5.0 shifter
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