dodger2107
Senior Member
hey everyone, took the truck in for an oil change a few days ago and they did a tsb 18 046 11 ( I cant find it anywhere but they said it is for engine performance )I could tell right away it was different (felt like it had a little more power and shifted different).Well today I took it on the highway and kept it between 70 -73 I averaged 18.3 mpg (I was getting about 14 before).I reset it when I got off the hwy and did some mixed. easy- hard driving and averaged 13.2 (before i was getting 11s , Dont know what they did but it works for me.....If anyone is interested ask your dealer if this is avail for your truck