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"The problem with oil is, the additives is the weak link. Theoretically, oil itself does not break down; it is the additives that break down. The majority of the contaminants are the acids that are byproducts of the internal combustion engine. As the additives combine with these acids, they form the sludge and gunk that turns your oil to black. Heat also cause the additives to break down. So as more and more additives break down, your oil turns more and more to its pure form, the base oil. That is why your base oil's VI is important in the first place -- it provides a good basis for the additives at the given temperature range." So, the ZDDP is still there, but in smaller quantity. Wouldn't this just argue for a relatively frequent oil change interval (say, 3000 miles) instead of a wholesale replacement of your oil of choice?
Your powers are useless! I'm wearing my tinfoil underwear! |
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