You will only feel a difference in performance with a lower octane fuel, IF the engine requires a higher octane. If it doesn’t require a higher octane gas, it will absolutely make no difference.Just a subjective observation:
Over the last 2 weeks I was on vacation driving around eastern Canada in a rented 2018 Dodge Caravan 3.6L V6 mini-van. On the first gas refill, at an "Irving" gas station in Quebec City, I was surprised to learn that at some Canadian stations they don't post the actual octane rating numbers on the pump. They just had 3 labels, which were called "Ordinaire", "Plus Sans Plumb" and I think "Premium". I was about empty, so I put in nearly a whole tankful of Ordinaire - I don't know what it's actual octane rating was or if it contained ethanol. Soon after I drove away, I detected a noticeable loss of power compared to whatever gas had been in it when I picked up the rental car.
This is the first time I have detected a real difference in performance by using a higher octane gas than called for by the manufacturer. This may have been due to the fact that the van was heavily loaded with 6 passengers and their luggage. Although I failed to do the calculations, I suspect I also got worse mileage on the lower octane. After that I always used the mid-octane level gas and it seemed to help the performance.
At what speedStock Sport auto on all terrains. I'm pretty happy with it. I'm getting about 2-3 mpg less than I did with my Mazdaspeed3 on the same commute.
My Rubicon fuel mileage has gotten better after 2300 miles I am now averaging 18.5 at 75MPH at 70mph 19.5 - 20mpg
The first 1500 miles nothing better than 16 plus I reset the it after every fill up so far its all good
Mixed. I get a few miles at 70 mph, then usually no more than 60 mph, and often times stop and go traffic for 10 miles or more, plus about 4-5 miles of city driving at 25-45 mph.At what speed
Pretty much what I get with the same set-up. My best so far is 19 mpg at 75 mph; Philadelphia to North Jersey.Stock JLUR. 6-speed manual. 8 weeks. 2k miles. I consistently get about 17mpg. 70/30 city/hwy driving.
Why is that? I’ve got about 100 miles on my Rubicon and I’ve been disappointed with with 16-17mpg.Essentially the same results here, mpg on my JLUR has improved substantially over 5,000 miles
It's odd that Irving would not have the octane on the pump (somewhere). Most brands here state that they ~could~ contain up to 10% ethanol.Just a subjective observation:
Over the last 2 weeks I was on vacation driving around eastern Canada in a rented 2018 Dodge Caravan 3.6L V6 mini-van. On the first gas refill, at an "Irving" gas station in Quebec City, I was surprised to learn that at some Canadian stations they don't post the actual octane rating numbers on the pump. They just had 3 labels, which were called "Ordinaire", "Plus Sans Plumb" and I think "Premium". I was about empty, so I put in nearly a whole tankful of Ordinaire - I don't know what it's actual octane rating was or if it contained ethanol. Soon after I drove away, I detected a noticeable loss of power compared to whatever gas had been in it when I picked up the rental car.
This is the first time I have detected a real difference in performance by using a higher octane gas than called for by the manufacturer. This may have been due to the fact that the van was heavily loaded with 6 passengers and their luggage. Although I failed to do the calculations, I suspect I also got worse mileage on the lower octane. After that I always used the mid-octane level gas and it seemed to help the performance.