I got my Explorer about a month and a half ago and it ran real good and I was getting about 14 miles to the gallon. I got the oil changed and drove it down to PC Beach FL. Now that I am back home in Cincinnati, OH I am suprised to be getting about 15 miles to the gallon but I think there is something wrong with my transmission. The first gear is fine but after that it seems like I miss a gear when I accelerate. Like when I get on a ramp to get on the highway from pretty much a stop it seems like it takes me twice as long to get up to atleast 60mph and then my acceleration is fine. My speedometer is also off but I will be getting that replaced. If anyone here can help me thanks.