ok so i'm nearing 600 miles....i don't want to pay the 300 for the 600 mile maintenance costs so can i just change the oil myself and save some money without taking it in...i know people say that 90% of the 600 mile maintenance is just an oil change so what's the other 10%? is it something i can also do myself....i mean i don't want to pay bookuu money for something i can do myself