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Should time be considered a factor too?...... Posted by MI-Roger [Email] (#882) [Profile/Gallery] (more from MI-Roger) on Thu, 16 Dec 2004 04:29:26 In Reply to: Yes. 2001 9-3, SWEDECAR [Profile/Gallery] , Wed, 15 Dec 2004 19:59:09 Members do not see ads below this line. - Help Keep This Site Online - Signup |
This vehicle is effectively 4 years old and was driven less than 4,000 miles per year - on average. So the 10,000 mile oil has been in the crankcase for 2-1/2 years!
Assuming the car was serviced with a semi-synthetic or full synthetic, I wonder if it is possible for biological agents to digest the synthetic components of the engine oil over time?
My work experience is with the infrastructure associated with heavy manufacturing (buildings, building systems, and some process systems). I know from thhis experience that when the metal cutting specialists started switching to semi and full synthetic cutting fluids for reduced machining cycle times and better part finishes, control of biological contaminants in the coolant systems became a major issue. Mineral oil based cutting fluids would become contaminated over a long period of time, the semi and full synthetics could become contaminated with microbes over a long week-end if everything went to "the warm place".
These microbes actually use the fluid as a food source, drastically changing its properties.
A possible new product niche; biocide additives for engine crank cases which use synthetic lubricants.
posted by 198.208.22...
_______________________________________ 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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