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Re: Should I be using ZDDP Oil in my 327?
I replace one quart of my current oil, (not this), with a quart of Lucas oil treatment. Would it be appropriate to add the Lucas product with this oil too? Thinking of switching from the Royal Purple I use. Thanks
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1968 Chevrolet C/10 LWB - 327, TH350 - 4/5 Drop
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