Question about the first service on a 03' Expedition, the dealer tells me the 1st service should be done at 3,000 miles, but the maintence book states at 5,000 miles. I've had the truck about one month now and have 2,500 miles on it. Any suggestions on who should I believe? Also I've notice a kind of dull groan when I make a hard turn at low speed, and ideas what it could be?
Thanks Sonny