Any synthetic motor oil is good for longer oil change intervals, that is its only advantage over an organic oil based product. If you go by the SAE rating there is no difference between a synthetic and any other oil with the same rating---except for how long you can use it. My car (a 08 Malibu) change oil lite comes on at about 80 thou. miles (twice a year for me) so there is no advantage to a synthetic for me. In a modern car I think a synthetic would be good for more then a year (average miles driving).
I understand some manufacturers are now recommending synthetic, I would go by what they say! (for warranty, if no other reason)
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