Recent content by Squashman

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    Flat tappet/zinc content concern ...

    Thanks for the info. Is adding a Zinc supplement beneficial?
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    Flat tappet/zinc content concern ...

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: old1</div><div class="ubbcode-body">By QS 10w30 with added zinc, do you mean QS Defy ?? If so, from what I have read here and elsewhere that is what I have switched my old (1950-1965-1980) vehicles to now that I have...
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    Flat tappet/zinc content concern ...

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 440Magnum</div><div class="ubbcode-body">If those engines have stock cams and lifters, then you really don't have much to worry about. You *could* use the latest SN-rated 5w30 without concern at all. I would pick by...
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    Flat tappet/zinc content concern ...

    Hi everyone. I've searched prior to posting with no luck, just confused. I have two older GM V8 powered engine cars. 1975 Pontiac GrandVille, 455 1980 Cadillac CDV. 368 I'm lost as to what spec oil I NEED. These cars sit in an unheated garage in NC, mild climate. I used the QS 10w-30...
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