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    Real World differences between Redline/Amsoil 5w30

    I am due for an oil change in my 20K mile Corvette Z06 (LS7). As many have heard, there is a potential iron valve guide wear issue in these engines - but it tends to be most prominent in highly raced or highly modified cars. MY LS7 is driven pretty much only on the street as a weekend car -...
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