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07 Box S -- UOA at 16967 miles, 9393 miles on oil

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Paul, how old is the oil? More than 1 year?

No, it was in the engine for 10 months -- I changed the factory fill back in Oct 07 when the car had ~7500 miles. This is my first Porsche so I don't know if having a fuel dilution above the <2% limit is "normal" for these cars. I hope to change out this oil closer to the 7500 mark next time to see if this oil has an upper limit to its "life".



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Did you recently add a fuel cleaner, prior to the oil sample?

No, I don't use any additives for fuel/oil. Been buying Shell V-power gas (with 10% Ethanol, which I verified) since I've owned the car (from the same station). I bought enough of the Motul oil for three changes, and the second batch went in this time.

Other than the high fuel dilution, the UOA looks pretty good.



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Are you using Blackstone? When you send the sample in what info do you provide with the sample?

Hi Tool Pants,

I stopped using Blackstone because I found another company locally (Bently Trib Services) in the greater Boston area. I provided the sump capacity, mileage on oil, mileage on the engine, engine size, oil brand/grade, added oil info, fuel type/grade, and where the sample was taken (sump).



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Thanks for posting this. I love seeing these.

I do too -- I wish more people would do used oil analyses, but it seems that this practice is not very popular in the Porsche community.



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