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Originally Posted by curtis73
According to Amsoil, the technology is there for any of the companies to make long-lasting oil, they just don't because that means you will only buy half as much oil..
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Ahh, the conspiracy theory from Amsoil. Anyone who knows anything about oil, the patent process and economics should know that this ranks with Roswell, the 600mpg carburator and free energy in general.
If you run an engine consistantly (as one load), never take it through any heat cycles, with good a/f ratio and filter it well, it will easily be good stuff for a hundred thousand miles. An engine run at a proper temperature makes for a pretty good distiller of its own.
Actually the new FI close tolerance engines driven mostly on the highway, could far surpass the 3000 mile oil life estimates provided by the manufacture's. But since they don't have full control of the environment of that engine, the manufacture (oil and engine) have to be somewhat conservative to protect their warranties and reputation.
Oil life has far more to do with the engine use than the oil itself.
Jim
SR Racing