I have a 2005 ST, owned for about 4 months, and of coarse love it. But in checking gas mileage, every time, I notice that the reading on cluster always goes to 38.2 or 38.6, after a fillup .... with very little change. I do know that it is not dead accurate but should be in the ball park. I filled up yesterday, to the bottom of gas cap, set the cluster, within 5 miles it read 38.4, rode about 127 miles to a RTE, and it up slowly went to 38.6?? Rode back home, total of 263 miles put in 5.3 gals..... calculator out??? 49.6 MPG. I'm happy with that, but is this discrepancy normal? By the way, after this fillup, with a full tank and 10 miles on it, it again reads 38.2 ?