grandpa
Member
Some of you have asked about my gas mileage since the change to the 4.90 gears. Here is what I got on a recent trip with 85% interstate (70MPH) and 15% secondary paved roads (55MPH). With 2 people and about 350 pounds of cargo. The mileage is GPS corrected with the stock odometer being +6.3%.
Total Miles: 932.5
Average MPG: 16.88
Best MPG: 18.24
Worst MPG: 15.11
I don't have exact numbers from before the gear change but I believe there is a slight MPG improvement. I do notice that the engine is not down shifting as often on longer uphill sections. I think that with the taller tires and the 4.90 gears the engine is close to the original RPM range.
Total Miles: 932.5
Average MPG: 16.88
Best MPG: 18.24
Worst MPG: 15.11
I don't have exact numbers from before the gear change but I believe there is a slight MPG improvement. I do notice that the engine is not down shifting as often on longer uphill sections. I think that with the taller tires and the 4.90 gears the engine is close to the original RPM range.