Posted by wilson2 on February 15, 2010 at 06:56:03 from (173.15.98.99):
In Reply to: Maybe OT Type of oil posted by Cockshutt Mike on February 14, 2010 at 21:47:12:
Well, we run OTR trucks and the cost of oil, well everyone knows! We decided based on another company we know results, to start moving up 5k per change to 25k / 500hrs and run test. We looked at different test results from our lab we use, and found the best results over all was Mobile Delvac 1300 extended life. We are now saving by 2.5 on oil changes and are seeing no issues over time. One issue on Synthetics is Cummins and Cat did not start building engines with seal and gaskets to support using the syns till 2003 if I remember correctly. Back in my Engineering days in automotive, GM wear tested the syns and the worst one was Amsoil, so I always wondered why people pay 2-3 times more for a product that is not as good as the Mobile 1, which is what we use in autos.
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