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Old 10-20-2009, 02:49 PM
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Bob In Ct Bob In Ct is offline
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Join Date: Mar 2001
Location: Southern Connecticut, CT
Cobra Make, Engine: SPF - 351W, 944 non-turbo
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Default Just Had Oil Analyzed

Last fall I poured in 9 quarts of Redline 5w-30 street oil. At the same time I sent a sample of the virgin oil to Blackstone for analysis. A few weeks ago I again changed my oil and I sent a sample of the used oil (1,500 miles) to Blackstone for analysis. I use no additives in my fuel or oil, engine has about 14,500 easy miles on it.

I also included a Mobil1 test (used oil) from last year.

Here are the numbers - before/after/used Mobil1

zinc 1199/1283/790
phosphorus 1079/1060/656
molybdenum 705/689/81
lead 0/37/17

Any thoughts?

Bob

www.blackstone-labs.com

Last edited by Bob In Ct; 10-20-2009 at 08:16 PM..
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