Originally Posted By: Tom NJ
700°F is beyond the thermal stability on many components in motor oil, and the rate of oxidation is thousands of time higher than what an engine sees. The chemical reactions that take place under these conditions bear no resemblance to the reactions taking place in an engine. An additive that out performs all others in an engine may fall apart at 700°F, but who cares if it never sees those temperatures. If you ran the test at 1,000°F for ten hours, all of the oils would turn to carbon, but that doesn't mean they are all the same.
My marketing comment refers to companies that use non-standard tests to promote their products.
Tom NJ
Quite well formulated, I completly agree.
It is proved that all kind of tests on engine oils, which consist of cooking above 700F, friction machines etc. are irrelevant to a real engine oil test, don't prove or disprove anything, create conditions that have nothing to do with the lubrication of an engine.