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    Ford F-350 PSD 93k mi; D-A Lubricant Reliant FS 5w-40 8.4k mi

    I don't think I have seen a UOA on here of any D-A oil, so I thought I would post one I had done.
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    understanding beta ratio.

    I'm trying to figure out the best filter to use out of 3 different ones as they all seem to fit my application. the problem I am having is understanding the beta ratios because they are not worded the same. The filters are Fleetguard HF35503, HF30730, and Donaldson P566400. On one of the...
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    Cenpeco synthetic blend 5W-30 08 Nissan Altima

    Here is a link to an oil analysis when I was using Cenpeco, I've been thinking I've been getting to hung up on the synthetics, would M1 or PU do much better. But keep in mind these were only around 3000-4000 miles. TBN was around 4 on all of them. http://img560.imageshack.us/i/oilanalysis.jpg/
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    PDF

    How do you attach a PDF?
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    Viscosity Index

    From what I read on this site in the section on the Home Page that talks about the effects of shearing, it says that it is better to use an oil with the numbers closer. With that said, I was looking on the Pennzoil site and for PU, the 5W-30 has a higher VI than the 10W-30. Shouldn't it be the...
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    cenpeco S-3 15w-40 5.9 cummins 6,158 miles

    I'm new to this site, and just thought I would post my last oil analysis. 6,158 miles on oil and 92,000 on engine. Iron: 8 Chromium: 1 Lead: 3 Copper: 2 Tin: 0 Aluminum: 3 Nickel: 0 Silver: 0 Silicon: 11 Boron: 2 Sodium: 6 magnesium: 218 Calcium: 3788 Barium: 136 Phosphorus: 1379 Zinc: 1807...
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