I have made it 4000 miles before my oil light comes on. I mostly drive on the highway. Do the changes myself. Fram Toughguard Filters - Penzoil Full Synthetic
I recently had my oil changed for the second time, this time I asked the dealership shop supervisor why my oil change light came on at 2,600 miles the first time and well before the 6k mark for the second time. He stated that if the truck is cleared (oil change light) with the computer hooked up to the truck then the oil change light will come on at approx the 3k mile interval BUT if the light is cleared manually (by putting the key in the accessory position and pushing on the gas pedal all the way down 3 times) then the light will come on at the recommended 6k interval. I told him "6K WOW!!!, what kind of person changes his oil after 6K miles!!!"
Mine came on bout 2500 miles and 60 hours.I'm using Wix oil filters and Amsoil XL Series 5w20.Amost ANY new modern oils will go 6k these days.3k oil changes are a thing of the past.