Just a word of caution, I bought a GMC Acadia in 07 the first year, not the first year for 90% of the components. My oil computer was saying change a what would have been 10,000mi. I did it at 3,000 anyways. And stayed on, no more than 4,000mi scheule with simi-syn oil. 2.5 years and 36200mi later I hear a tick in the engine. within 10 minutes its a bad tick. Drove fine had power, just a loud tick. get to the dealer they say leave it will call you, they call after they pull the engine to find a broken piston skirt down in the crank. GM gave me a new engine, but first tried to say I never change the oil. I had good records. Next they told me it was due to using non-GM parts (aftermarket oil filters) This was straight from GM not the dealer. Few months later GM sent a recall letter to update the computer on the Acadia's do to low oil consumption. It now tells me at 3000 on the dot to change the oil. My dealer also said some aftermarket oil filters where not as good as others and they had filter pieces stuck in oil lines. They would not say which one but did say they did not find any pieces in my engine. And said name brand filters were not the problem.
My point is use caution, do what you think is right, if the computer is giving too long of an oil change time, change it sooner.
