Originally Posted by akim1220
I have a '14 JGC Limited w/ 20" wheels. I have about 67XX miles on the jeep and had the first oil change done about 2 months ago. I noticed that after the oil change, my MPG dropped from about 19 to just under 17. Most of my driving is done in a suburban area.
At first I thought maybe it was the way I was driving. When I first got the Jeep I was babying her and as time went on I started driving normal. But normal is rarely taking the RPM's past 3k.
From what I have read so far, its seems like 19MPG is what people are getting in the city. Is my drop in MPG normal or should I be concerned? Any things I can look for to improve mpg?
I assume you're referring to the 3.6L engine? In 4X4 configuration it's rated at 17 city, 24 highway and 19 combined for reference.
I have a 50 mile round trip commute to work which works out to about 30 miles of 2 and 4 lane highway and 20 miles of stop'n go city driving. I've never checked mine for pure highway mileage but I run a combined average of around 20.4 in warm weather. This will drop to around 18 in cold weather... even lower when temps are sub-zero and/or 4WD is engaged on slippery roads.
I'm not aware of any cold weather change made to the blend of gasoline (for diesel there is) and I can't see how an oil change would negatively affect fuel economy. If it's cold and/or snowy where you are then I'd chalk your drop in mileage up to that.
If you aren't already using it, give Eco mode a try. See if that helps. On mine it makes a positive difference in fuel economy.