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Latest Discussions

  • Posted in: Automotive Sector

    Z inc content in oil was reduced years ago due to adverse effects on catalytic converters. I'm not sure but I suspect it has been reduced in diesel oils as well since new d iesel engines are required to have catalytic converters....

  • Posted in: Open Forum

    Wiki automobile manufacturing in Canada, But have a close look at Magna and Bombardier. ------------------------------ Ross Eddie C R Eddie Engineering Inc Toronto ON

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    RE: OIL ADDITIVES

    Posted in: Automotive Sector

    Jon, the issue of "they're messing with my oil" has been going on since just after the dinosaurs died. Its formulas get revised regularly for any number of reasons, including chemical breakthroughs, cost reductions, and in a large part, changes to the very engines it is designed to protect. As engine...

  • Posted in: Aerospace Sector

    Gregory, regarding the methods to reduce the impact of vortices, I'm afraid that's not my specialty - I'm going by my college experience 45 years ago. We modeled airfoils using a distributed set of sources and sinks along the airfoil axis, but that only gave a symmetrical shape which did not predict...

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