How to optimize fuel consumption by changing the rear differential ratio?

Does changing gear ratio affect gas mileage?

If you are constantly towing, the highest axle gear ratio possible is what you’re after. The choice of a numerically higher axle ratio will only knock off about 1 mile per gallon from the truck’s fuel economy. But since pickup truck fuel efficiency is low to begin with, even a 1 mpg reduction is significant.

What gear ratio is better for gas mileage?

The lower the number, the better fuel economy, and the higher the number the more towing power you have, but fuel economy suffers. For instance, a 3:31 gets better fuel economy than a 3:73. On the other hand, a 3:73 or perhaps a 4:10 will tow much more, while fuel economy greatly drops.

How do you reduce fuel consumption when changing gears?

Fuel consumption can be greatly reduced by accelerating the car gradually and by changing the gear very smoothly. By anticipating the stops, you can avoid applying sudden brakes. This can also be done by taking a long view of the road and coasting safely to where you see the traffic stopped.

How can I reduce the fuel consumption of my truck?

How to Reduce Fuel Consumption in Trucks?

  1. Improved routing. With GPS location tracking, fleet managers can know where a vehicle is in real time. …
  2. Better driving. High speeds consume more fuel. …
  3. Less engine idling. Traffic congestion or less-than-optimal routing on a job site will add to engine idle time. …
  4. Tires. …
  5. Maintenance.

Are 3.73 or 4.10 gears better?

4.10s are going to accelerate faster and decelerate faster on lift. However the trade off is greater fuel consumption per mile driven and higher engine speed per given road speed. In basic terms the 4.10s will feel quicker and 3.73 will feel faster.

Is a 3.92 rear axle ratio good?

But opt for the higher 3.92 axle ratio and that same truck packs a higher towing capacity of 9,930 pounds. The extra towing capacity comes about because the increased engine spinning helps improve off-the-line acceleration and pulling power when carrying heavy loads.

How do I choose the right gear ratio?

To find the ideal selection, multiply the final drive ratio by the redline speed in fourth gear (152 mph) and divide that by the top track speed (140 mph). This would yield a theoretical 3.33—which is close enough to the nearest available final drive ratio of 3.36:1.

What axle ratio is best for acceleration?

Performance: Looking again at the ratios used above, the higher 3.55 ratio indicates faster acceleration whether the truck’s empty or loaded. The higher the ratio, the more revolutions per minute. Towing: For pickup trucks released after 2010, the best axle ratio for towing falls somewhere between 3.55 and 3.73.

Is 3.31 a good gear ratio?

Those ratios provide very good acceleration with gas V-8s and diesels. Trucks equipped with 8-, 9-, or 10-speed automatics may work well with 3.31 ratios as the new transmissions have lower 1st and 2nd gears than the old 4-, 5- and 6-speeds, helping offset the axle ratio acceleration deficit.

How can fuel efficiency be improved?

By driving the vehicle in a lower gear for as long as possible. By using gentle acceleration and making gear changes appropriate to speed. By accelerating hard up through the gears to reach the desired speed as quickly as possible.

Does Catalyst reduce fuel consumption?

Catalytic converters reduce emissions but do not reduce fuel consumption.

What causes a car to consume too much fuel?

This bad habit is threefold – driving too fast, accelerating too quickly, and stopping too suddenly. All three of these actions lead to high fuel consumption. Where possible, you should accelerate slowly and drive with the speed of traffic.

How do I restore my fuel economy?

Try the following eight methods of getting your gas mileage back in check.

  1. Use Premium Gas if Your Car Needs It. …
  2. Open Her Up. …
  3. Change the Air Filter. …
  4. Add Some Fuel System Cleaner. …
  5. Check Your Tires. …
  6. Change the Fuel Filter. …
  7. Change the Spark Plugs and Wires. …
  8. Swap the Ignition Coils.

Which driving technique can save fuel?

Use Cruise Control Where Possible

Cruise control will save fuel when driving long distances on a flat surface without the need to change gears, speed up, or slow down. So, motorway driving, in particular. It’s estimated that just 34% of people use cruise control where possible.

What makes a car burn gas fast?

If you are an aggressive driver, likely you accelerate to quickly. This causes more fuel to be used, and will use up more gas than you need. The same goes for revving your engine. It may sound cool, but it uses up gas for going nowhere.

Does driving slower save gas?

Slow Down and Drive Conservatively

Speeding increases fuel consumption and decreases fuel economy as a result of tire rolling resistance and air resistance. While vehicles reach optimal fuel economy at different speeds, gas mileage usually decreases rapidly at speeds above 50 miles per hour (mph).

Do Iridium spark plugs improve gas mileage?

Improve the fuel economy with iridium spark plugs

Switching to iridium spark plugs can considerably improve the mileage of the gasoline vehicles on the highway. This change comes from the fact that you now have a better ignition profile to ensure the efficient burning of the fuel.