Recent content by njsti

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    2007 Subaru STI - Rebuilt engine lead content UOA

    Dennis, I was a little hesitant doing that many oil changes during the break-in period, but like you said regarding rebuilding engines, I don't personally rebuild them either. Has any data been shown that doing that many oil changes is beneficial? Doing an oil change after the engine start...
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    2007 Subaru STI - Rebuilt engine lead content UOA

    Has your lead dropped from 10? Was it because of an aggressive tune? My tune is on the conservative side. I will check out Dyson Analysis, thanks. The oil cooler is new, yes. I am still running Royal Purple Break-in oil up to 5000 miles. I am currently at 3600, and plan to run a UOA at the 5000...
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    2007 Subaru STI - Rebuilt engine lead content UOA

    Hoping based on the feedback it is in fact "noise", and will go away as the engine continues to break-in. Is it possible that lead is being leached from the bearing? Copper also stayed steady, is this another sign? To add, my oil pressure is on target between 80-90psi at cold start, and...
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    2007 Subaru STI - Rebuilt engine lead content UOA

    My first post, so excuse me if I am lacking required information. This sample was taken from a rebuilt Subaru EJ257, which suffered from a piston ringland failure. The block halves were re-used, but pistons, rods, crank, bearings, etc. were all replaced with new parts. Oil change intervals...
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