Posted by sotxbill on February 14, 2012 at 15:07:00 from (76.227.24.151):
In Reply to: Synthetic Blend Oil posted by Ken Macfarlane on February 14, 2012 at 05:26:19:
Its not about the base oil, its about the additive packages on top of the the quality base oils.
If you look at the api and jasso and euro testing of oils, you will find that heavy duty oils perform well with either the group3 base or the group4 base oils. And in many cases a blend of group3 and 4 oils can perform better than a group 4 oil alone.
So all the talk about pao or hydrocracked group 3 is really just talk. take either one and add a great additive package to it and you will get great wear and performance results. Buy an oil that meets or exceeds your needs and you will do good. anyone who cares only about the base oil is a fool on a fools errand. Throw all the marketing aside and look at the api tests results and then pick an oil that meets or exceeds your needs. you will be surprized that the best oils are not always the most expensive oils. api, jasso and euro tests are actually very similar and produce almost identical results. The difference being that the american markets has more very good oil products while the euro markets have only low and high oils. the hydrocracking process developed by chevron and used by most american refineries produced lots of very very good performing oils over here that were not availible elsewhere. Other counties had groupII oil or groupIV oils and no middle ground. well made group III oils with a great additive package will perform better than group iv oils with NO additive package. So again, buy oil that is rated heavy duty and has a good additive package. Diesel trucks now run a million miles between overhauls with the better oils.
Its not about the synthetic nearly as much as its about the additive package.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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