The above reply is a good one overall. Your new truck has an oil life monitor so the days of 3K OC's are past. My only issue with OLM's is they can have you going 7-10K on an OC and that is too much for a filter. The oil itself may be okay for that length but filters are not. 5K is as long as I am comfortable going on a filter and I have yet to meet one, including a Mobil 1, that I would push past 7K. Synthetic oil mfg's that advocate extended oil change intervals of 10K or more always recommend changing the fiilter between 4-5K and topping off the oil. I personally do my OC's, even with synthetic, at 5K because I am there doing the filter anyway and at least 1/2-1qt of oil. I just do it period. 5K also is a convenient mileage figure to keep track of and I can rotate the tires at the same time.actually, i have several:
1. re-evaluate your "oil has to be changed at 3000 miles" belief. no, it does not. read manual carefully. what dealer tells you is dealer's job and profit. there are no 07 cars that need oil to be changed every 3K miles, unless you are driving in the Goby desert all the time. search on the internet for a book called "car oils bible", it might shad some light on the 3K oil change. myth
2. i am a firm belever into synthetics. FIRM. engines run much better, oil changes need not to be done as often, less sludge formed. in 2004 i bought a brand new honda cr-v, and put 54K miles on her in one year. based on the 3K theory, i did oil changes every 2.5 weeks, as it was nothing for me to get 1200 miles a week. ergo, i went through every oil they had on the market. until i found royal purple. that was it! it's the best oil out there, i have multiple vehicles, at certain point, all of them ran on RP with fantastic results. if the engine is done right and you have no blow-by exhaust going into crankcase (lord save me from even thinking that chevy could possibly make something like this!), RP will easily last for 10K miles. yes, it's pricy. well, you always get what you pay for. also, you can pay now, or you will pay later. trivial.
3. slowly, i ventured from RP to amsoil. mostly due to the same OIL BIBLE, as guy who wrote it "proves" that it's the best oil out there. ok, here's the scoop on amsoil: my wife's RX300 really likes it. i lost track of miles i have on the last refill, engine runs nice, smooth, and quiet, oil is just dark caramel; i had it in my ranger for some 12K miles, and changed it as engine got to the point of slight noiseness; my honda could not tell any difference; my chevy truck does not like it! it's been only 7K miles on refill, and oil is already dark and i start sensing some noise on the cold engine. so, RP it'll be in few weeks.
of course, i am far from assuming that out of all the cars, chevy's engine has the worst piston rings seal and oil is burnt due to blow-by gasses. that would have been a prepostorous idea!
4. by the way, when i do my oil changes, i do them myself and do flush with flush oil. now that is something that will extend your engine/oil life greatly! i simply drain used one, refill with the cheapest one in the right weight i can find at walmart, and run engine for 15 minutes, with the last 2 at maybe 2500 rpm. then drain it. you know what - comes out pitch black! then i change filter and refill with good oil. beat that, quick lube. or even dealership.
5. use MOBIL1 filter only! it's been proven that it's the 2nd best filter out there. 1st best can not be purchased nationally, as it's made for japan use only.
Couple points. The first is don't go by the color of the oil to determine when to change it. It has nothing to do with whether or not it is still good. Only if it is milky white or a cloudy tan, which indicates water in it, does the color tell you anything. Carmel colored oil can actually test bad and dark black oil can still test good. Oil gets black because the detergents in it are doing their job and cleaning the engine that is all. It can still be good however and being black or very dark does not mean the oil is bad. The only way to know for sure if the oil is good is to have oil analysis done or with a synthetic you change it around 5-7K which any brand should most definitely be good for.
Royal Purple is an EXCELLENT oil and I highly recommend it. Amsoil is very good as well but be leary of claims on their fluids. "Most" are their own tests and are very biased. They are also famous for 1/2 truths, misleading claims about their products and competitors, and out right falsehoods. Their products are good don't get me wrong but the company is not very ethical.
Mobil 1 filters are good but they are very expensive. If I am spending $10-$11+ a filter I would run a K&N which is every bit as good or better than the Mobil 1 filters. K&N is also not made by Mobil 1 which is owned by ExxonMobil. They are the biggest gas gougers out there and I try like hell not to give them any of my money. A K&N will do the job every bit as good as a Mobil1 filter but you don't support any crooks when buying it. AC and Wix/Napa Gold( same filter - different labels )are two excellent filters that are good for 5-6K at 1/2 the price of the K&N or Mobil 1.