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The Terminator
Engine/Tuning
Facts About Royal Purple 5W-20 XPR Racing Oil
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<blockquote data-quote="Jimmysidecarr" data-source="post: 10445649" data-attributes="member: 11681"><p>The R/P racing oil is pretty expensive, so I run 1/2 street and 1/2 racing in a Canton road race pan. It's a fairly expensive fill, but not as expensive as all XP.</p><p></p><p>I am also not a fan of 20wt oil, at least not for my usage. It will make more power with 20 weight in it, but my usage is pretty close to endurance racing with mostly street driving tossed in on top. Money isn't my main reason but it's part of it, I like having a blend of those two oils for my usage.</p><p></p><p>I'm running the 10w40 weight and I have not had any lash adjuster issues or any oil related issues AT ALL. If they made a 5w40 or a 0w40 I would run that. In Houston I'm not too worried about a 10 cold side rating.</p><p></p><p>My stock cats are still fine... bla bla bla.</p><p></p><p>If I was not doing open track events I would be running the 5w30.</p><p></p><p>If I wanted to make the most possible horsepower and get the best gas possible mileage I would run the 5w20. But I don't.</p><p>I'm also making 146 horsepower more than when I was stock, so I'm thinking I modded the power output I'm going to mod the oil protection too. So no 20wt for me.</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 10445649, member: 11681"] The R/P racing oil is pretty expensive, so I run 1/2 street and 1/2 racing in a Canton road race pan. It's a fairly expensive fill, but not as expensive as all XP. I am also not a fan of 20wt oil, at least not for my usage. It will make more power with 20 weight in it, but my usage is pretty close to endurance racing with mostly street driving tossed in on top. Money isn't my main reason but it's part of it, I like having a blend of those two oils for my usage. I'm running the 10w40 weight and I have not had any lash adjuster issues or any oil related issues AT ALL. If they made a 5w40 or a 0w40 I would run that. In Houston I'm not too worried about a 10 cold side rating. My stock cats are still fine... bla bla bla. If I was not doing open track events I would be running the 5w30. If I wanted to make the most possible horsepower and get the best gas possible mileage I would run the 5w20. But I don't. I'm also making 146 horsepower more than when I was stock, so I'm thinking I modded the power output I'm going to mod the oil protection too. So no 20wt for me. [/QUOTE]
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