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Which Mobil-1? - Have a sample tested with TBN values Posted by MI-Roger [Email] (#882) [Profile/Gallery] (more from MI-Roger) on Sun, 10 Jul 2011 05:56:40 In Reply to: Mobil 1 beyond 5K too risky?, steve, Sat, 9 Jul 2011 22:30:46 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I had a sample of the used 5W/40 Total Quartz Energy 9000 tested that I drained out of my car at 295K miles and 5300 miles of oil useage. All the oil properties were still close to new, with the exception of TBN.
I am not a Tribologist, but the TBN (Total Base Number) measures the oil's ability to neutralize engine acids. My oil had dropped from a new condition TBN of 8.8 to a TBN of 2.4. Values below 1.0 are not recommended!
Extrapolating those numbers, my oil could have gone a little over 6,000 miles without issue. Some of the Mobil-1 oils start with a TBN above 11 which would alow them to go longer - assuming everything else stays within range.
Pay for an analysis and know for sure. A lot could depend on your individual driving conditions.
posted by 98.250.156...
_______________________________________ Saabs owned: 2008 9-5 Aero Sedan, sold at 227K miles 2006 9-3SC 2.0T - Wife's daily driver 2000 Viggen Convertible - Sold May, 2022 1964 Quantum IV Formula Car - Retirement project 2000 9-5lpt Sedan, sold at 318K miles
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