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SVTPerformance Oil Futures Index : Royal Purple HPS Review
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<blockquote data-quote="Jimmysidecarr" data-source="post: 11618968" data-attributes="member: 11681"><p>Due to varying degrees of quality, the ZDDP anti wear additive as used by nearly all engine oils, in it's cheapest form can exhibit low retention and high volatility.</p><p></p><p>When this cheaper version of the ZDDP additive is used in higher than normal levels, and is combined with an engine that is burning oil, it can lead to early cat failure.</p><p></p><p>Oil companies have a choice when blending oils as to which quality level the components are that they buy.</p><p></p><p>We only use the very best additives and base oils in our oils. I have been using the Royal Purple XPR series race oils in my 2004 SVT Cobra Mustang since 2006 and it still has the stock cats in perfect condition.</p><p></p><p>The XPR series race oils have the highest levels of ZDDP of all of our oils. Nearly all of the employees of Royal Purple have been using XPR series oils in their "grocery getters" and daily drivers for over ten years without a single cat failure.</p><p></p><p>The HPS has less of this ZDDP additive so it will present even less risk of premature failure.</p><p></p><p>If I had to choose between buying cats or buying an engine I'm pretty sure I know which one I would favor with superior protection.</p><p></p><p>However if you are extremely concerned about your catalytic converters life, you also have the choice of playing it perfectly safe and using the SAE/API-SN version of the oil.</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 11618968, member: 11681"] Due to varying degrees of quality, the ZDDP anti wear additive as used by nearly all engine oils, in it's cheapest form can exhibit low retention and high volatility. When this cheaper version of the ZDDP additive is used in higher than normal levels, and is combined with an engine that is burning oil, it can lead to early cat failure. Oil companies have a choice when blending oils as to which quality level the components are that they buy. We only use the very best additives and base oils in our oils. I have been using the Royal Purple XPR series race oils in my 2004 SVT Cobra Mustang since 2006 and it still has the stock cats in perfect condition. The XPR series race oils have the highest levels of ZDDP of all of our oils. Nearly all of the employees of Royal Purple have been using XPR series oils in their "grocery getters" and daily drivers for over ten years without a single cat failure. The HPS has less of this ZDDP additive so it will present even less risk of premature failure. If I had to choose between buying cats or buying an engine I'm pretty sure I know which one I would favor with superior protection. However if you are extremely concerned about your catalytic converters life, you also have the choice of playing it perfectly safe and using the SAE/API-SN version of the oil. [/QUOTE]
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