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SVT Shelby GT500
Motorcraft 5W50 VOA
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<blockquote data-quote="UnleashedBeast" data-source="post: 10256590" data-attributes="member: 112023"><p>Correct,</p><p></p><p>Let's say you had catalyst failure at 99,000 miles. If they wanted too, they could do a UOA and see high amounts of ZDDP in the oil and void your catalyst warranty. </p><p></p><p>Although, I'm to smart for that. I would drain the good stuff and pour in FoMoCo 5W-50 before taking it in for catalyst replacement. </p><p></p><p>But I say again.....</p><p></p><p>A superior group IV/V formulation with high amounts of ZDDP and low NOACK Volatility will not harm the catalysts any more than..</p><p></p><p>A medium grade group III formulation with lower amounts of ZDDP and high NOACK Volatility. </p><p></p><p>So, I have no worries about the catalysts on my car, or anyone else who is using Red Line, Royal Purple, or AMSOIL in theirs.</p><p></p><p></p><p></p><p>I think he uses that Dollar Store cheap oil crap. Hey, it has the API SM starburst logo on it, so that means it's good....right guys? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>Honestly, he's an AMSOIL guy like me.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 10256590, member: 112023"] Correct, Let's say you had catalyst failure at 99,000 miles. If they wanted too, they could do a UOA and see high amounts of ZDDP in the oil and void your catalyst warranty. Although, I'm to smart for that. I would drain the good stuff and pour in FoMoCo 5W-50 before taking it in for catalyst replacement. But I say again..... A superior group IV/V formulation with high amounts of ZDDP and low NOACK Volatility will not harm the catalysts any more than.. A medium grade group III formulation with lower amounts of ZDDP and high NOACK Volatility. So, I have no worries about the catalysts on my car, or anyone else who is using Red Line, Royal Purple, or AMSOIL in theirs. I think he uses that Dollar Store cheap oil crap. Hey, it has the API SM starburst logo on it, so that means it's good....right guys? :D Honestly, he's an AMSOIL guy like me. [/QUOTE]
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