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I tend to agree. In day to day driving (unless you have a car like the RDX that requires synthetic due to it's turbo), synthetic oil really isn't needed. Oil companies have been very successful with it's marketing strategies, not to mention Oil engineers have found a cheap way to refine 'synthetic' oils from crude basestocks.
However, one big plus of synthetics is generally longer drain intervals than conventional - they tend to be more shear stable than conventional. (True Group IV and V and 'conventional' Hydrocracked Group III basestocks)
People who change oil more frequently than 8,000km with synthetics are wasting their money IMO. Conventional will perform just as well in such a short interval.
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