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    Considering changing to a different oil

    I put on maybe 3k miles a year. Strictly street.Semi radical Isky cam but nothing too crazy.
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    Considering changing to a different oil

    You make a good point about who's reporting the wrong numbers? Mfg or the labs? After reviewing various VOA results it looks like the different lab numbers come in half of what the mfg list. argh!!
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    Considering changing to a different oil

    I have been used Brad Penn's racing oil in my 68 Mustang with a 351c (flat tappet cam) motor but have been hearing that BP's Zinc and Phos numbers have been coming back from the various labs with low numbers. What oil is being recommended that has consistantly higher numbers of Zinc and Phos...
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    Correct zinc and Phosporus levels for muscle cars

    <div class="ubbcode-block"><div class="ubbcode-header">&nbsp;Originally Posted By: j454</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">&nbsp;Originally Posted By: Pablo</div><div class="ubbcode-body"><div class="ubbcode-block"><div...
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    Correct zinc and Phosporus levels for muscle cars

    Good info, thanks. I am currently running Brad Penn in the goat. They claim 1500ppm zinc though tests from Blackstone came back listing it at 1100+ppm. I'm running Royal Purple in the daughter's Mustang with a Blackstone report coming back also at 1100+ppm. Both reports lists the phosophrus...
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    Correct zinc and Phosporus levels for muscle cars

    Can I assume that too much of anything is not good? So much jargon going on about our muscle car engines with flat tappet cams not having enough zinc and phosphorus, make me wonder if one can add too much additive to their oils bringing the numbers too high? What is the optimim zinc levels? I...
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    Different results from 3 labs - Brad Penn

    First as of now Brad Penn didn't have their new 15w40 out yet so I mixed equally some 10w30 and 20w50 to achieve 15w40. This was done after consulting with Brad Penn. Prior to the mix I had sent a sample of virgin 20w50 to Peterson Cat labs. Then I mixed the above numbers and put the 15w40 mix...
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    No Love for Castrol Syntec?

    My late brother use to run Amsoil in his 67 GTO. Then for some reason, his favorite mechanic changed the oil to this Castrol Syntec right before I picked the car up. I just recently had a fresh unused sample of it tested and the Zinc and Phosphorus came back as 648/545 respectively. ***...
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    OK, which oil for my vintage metal family members

    <div class="ubbcode-block"><div class="ubbcode-header">&nbsp;Originally Posted By: addyguy</div><div class="ubbcode-body">WOW! Nice collection! Brad-Penn or VR-1 would be my choice for those beauties. Oh, and for the truck, you want to run a detergent oil. You're just gunking up the engine...
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    OK, which oil for my vintage metal family members

    '65 Mustang coupe with mild cammed 302 engine- Use to run yellow death (Pennzoil) but after losing a cam, I have switched over to 15w40 Royal Purple. Engine is much quieter so I guess I should be happy with it? '67 GTO HO 400-Passed on from my late brother last year. The last oil introduced...
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    Zinc and Phosphorus amongst diff viscosities

    Per a given brand of automotive oil such as Mobil 1, Redline, etc, will the % of Zinc and Phosphorus change say from a 10w30 to a 20w50? If so is there an estimated percentage increase or decrease depending on which way you go? Or another way to ask it is, if one was to have a variety of...
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