Here is UOA for Mobil1 ESP Low-SAPS oil. Oil was put in back at the beginning of January and changed on 22/7/14. Why I changed at 4,350 not 5K? Well, it was in the engine through very strong winter and it is my wife's car. Still trying to figure out whether this is true 5K oil in these VW DI engines. She does not drive a lot, and mostly car sees a lot of city driving. I take it sometimes to the mountains to ski. She always uses premium gas at COSTCO. I purposely tried to avoid Shell just to see whether UOA using Costco gas will show any problems. During driving, I cannot see difference between Costco gas and Shell gas, and it seems that it does not influence oil. Now, what I was really surprised with is cst viscosity. Mobil1 claims virgin oil is 12.2, and it sheared only to 11.81! TBN is at 2.1. Now TBN starts in this oil at 5.6, which is great result. TAN is 3.4, but TAN in this oil starts at 2.2. So what is your opinion? I could not upload PDF from home computer, I will try to do it from office tomorrow. Here is what Blackstone says: Metals are looking pretty good in this 2.0L TSI engine. They're reading at or below universal averages across the board, and that's always nice to see. The shorter oil change interval may have played a part in that, since averages are based on a longer oil run of about 5,900 miles. That's fine, though. That just means this engine could certainly handle a longer oil run, no problem! The TBN read at 2.1, showing some active additive remaining, and the TAN was 3.4. The viscosity read a bit high for a 5W/30, but that's not hurting anything. Try 6,500 miles next.
Miles on oil: 4,350 Miles on unit: 44,350 ALUMINUM 4 CHROMIUM 0 IRON 16 COPPER 2 LEAD 0 TIN 0 MOLYBDENUM 65 NICKEL 0 MANGANESE 0 SILVER 0 TITANIUM 0 POTASSIUM 4 BORON 107 SILICON 9 SODIUM 4 CALCIUM 1098 MAGNESIUM 73 PHOSPHORUS 663 ZINC 807 BARIUM 0 cSt Viscosity @ 100°C 65.7 SUS Viscosity @ 210°F 11.81 Flashpoint in °F 400 Fuel % <0.5 Water % 0 Antifreeze % 0 Insolubles % <0.3 TBN 2.1 TAN 3.4
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