Is the jk smart enough to maximize mpg
JK Enthusiast
Joined: Jan 2009
Posts: 331
Likes: 0
From: Nine Mile Creek, PE
well that makes absolutely no sense what so ever... damage it??? perhaps I am too dumb... I was hoping someone had actually tried premium and documented the mpg differences if any... I will try to do it myself. wouldn't take much of an increase in mpg to offset the additional cost. regular is 2.14 and premium is 2.35 at the moment so a 10% increase in mpg would make it even and any more would be a beautiful thing... any hp increase would be a major blessing... wish me luck...
Despite the fact that there may be better detergents, cleaners, marketing, etc in higher octane fuels, if the book doesn't say use it, don't.