How Can I Improve Gas Mileage In My RAM 2500?

By Nick Marchenko, PhD

Updated: September 11, 2023

Why is your RAM 2500's mpg not up to par? In an era filled with hybrids and electric vehicles, many enthusiasts still choose the reliability of the RAM 2500, powered by traditional petrol or diesel. The allure of these engines lies in their straightforward nature and the raw convenience they offer over newer technologies.

However, every RAM 2500 owner, whether a first-timer or a seasoned driver, might ponder over how to achieve a bit more mileage from their powerful beast. It's not always just about the numbers, but external factors like weather conditions and the overall health of the vehicle play their part too.

Owners aim to enhance the fuel efficiency of their RAM 2500 for various reasons: to cover longer distances with a single tank, to save some pennies, or just to get the best out of their machine.

Without further ado, let's delve into the primary culprits behind hefty fuel consumption and see how one can get a bit more miles per gallon out of the RAM 2500.

Key Takeaways:

• Diesel engines inherently consume 20-30% less fuel than their petrol counterparts, with diesel being a more energy-packed fuel.
• To ensure top-notch fuel efficiency in your RAM 2500, sticking to the recommended speeds, making good use of cruise control, and employing the ECO-Mode are vital.
• A well-maintained RAM 2500, especially concerning spark plugs, filters, oil, and the overall engine health, can make a world of difference in reducing fuel consumption.
• The modern-day RAM 2500, with its array of sensors, can pinpoint system issues leading to excessive fuel guzzling.

Which RAM 2500 engine offers the most miles per gallon?

Several elements dictate the fuel consumption of the RAM 2500. Engine structure, cylinder count, and valve numbers are just the tip of the iceberg. It's a common myth that bigger engines are thirstier, but it's not entirely accurate.

Engines at the extreme ends of the spectrum can surprise you. Small engines, due to their fewer cylinders and efficient combustion, can be surprisingly frugal. On the flip side, a powerful engine can propel a vehicle effortlessly, resulting in less energy and fuel usage.

In the same vein, the more muscular engines of RAM 2500 can also boast commendable fuel efficiency. With more power at their disposal, these engines can move the truck without breaking a sweat, ensuring optimal fuel consumption. The key is matching engine power with vehicle weight.

Diesel vs Petrol: Which is the champion of efficiency?

It's a widely accepted fact: diesel engines are more frugal than their petrol siblings. They typically use 20-30% less fuel.

Besides, diesel engines, with their superior torque and efficiency, are the workhorses ideal for towing and carrying loads. They shine at low revs and offer excellent power delivery. But there's always a trade-off. Petrol engines in the RAM 2500 offer swift acceleration and dynamic performance.

The inherent efficiency of diesel comes down to the nature of the fuel. It's denser than petrol and releases around 15% more energy upon combustion. Diesel can combust at a wide range of air-to-fuel ratios, leading to superior efficiency and torque. This characteristic makes diesel engines less thermally stressed, translating to better longevity and performance.

So, when making the choice for your RAM 2500:

• If rapid acceleration and sheer power are what you crave, a petrol RAM 2500 is the way to go.
• For those eyeing stellar fuel efficiency and commendable torque, a diesel variant would be the best bet.

How to Boost Fuel Efficiency in Your RAM 2500?

When we talk about fuel economy, various factors come into play, and the outcome can vary based on the conditions and model year of your RAM 2500.

We're about to share some universal methods. Stick to these, and you might just see a noticeable dip in the thirst of your RAM 2500.

Steady on the Speed

Constant acceleration or cruising at top speeds will have your RAM 2500 guzzling fuel like there's no tomorrow.

But, on the contrary, chugging along at 20 mph won't do your fuel economy any favours either.

The question is, what's the sweet spot? Every RAM 2500 model has its own optimal "cruising speed". Stick to this speed and your engine will be at its most efficient. You'll often find this recommended speed highlighted on your vehicle's dashboard.

Make Friends with Cruise Control

If your RAM 2500 has a cruise control feature, it's high time you put it to good use, especially during those long motorway journeys. The system will seamlessly regulate fuel input, ensuring smoother throttle actions, which in turn, enhances fuel efficiency.

Go Green with ECO-Mode

If your RAM 2500 sports an ECO mode, don't hesitate to switch it on. This mode will tweak various vehicle parameters and shut down non-essential systems, ensuring optimal fuel consumption whilst also being kind to Mother Nature.

Smooth Acceleration is Key

Pushing the pedal to the metal? Your RAM 2500 will respond with increased fuel consumption. Aim for gentle and gradual throttle inputs.

Here's a little tip: Pretend there's a full mug of your favourite brew on the dashboard. Accelerate in a way that won't spill a drop.

Cut Down on Idling

Even at idle, the mighty RAM 2500 can be somewhat thirsty. An average truck, especially with those hefty engines, can consume a significant amount of fuel just sitting there. If you're going to be stationary for a while, best to turn off that engine.

Don’t Just Shut Off in Traffic

Some folks reckon that turning off the engine at every red light is a fuel-saving technique.

Well, that's not exactly spot-on. Starting the engine does consume a bit more fuel than simply letting it idle. Plus, you might just wear out the starter prematurely with constant stops and starts.

Here's the lowdown: If you're stuck in a jam and don't expect to move for a good few minutes, switch off the engine. But if it's just brief stop-and-go traffic, let it run.

Clear Out That Extra Junk in Your RAM 2500

Alright, mates! We've all been guilty of using our RAM 2500 as a storage shed on wheels. Whether it's that weekend trip or the tools from the last DIY job. But remember, the more weight you lug around, the harder your truck works and the more fuel it guzzles.

Give your RAM a breather and clean out that extra weight. It'll thank you with a few more miles per gallon.

Watch Those Tyres!

Now, let's talk tires. If they're not properly inflated, you're just burning fuel. You wouldn't wear slippers for a sprint, would you? So, ensure your tires are up to the mark, and you'll see the difference at the pump.

Smart AC Use – It's Not Just for Comfort!

A running air conditioner can be a fuel guzzler, but I'm not suggesting you roast in the summer heat. Instead, use it wisely. Cool down your RAM 2500, then maybe give it a break. Toggle it on when needed, and you might save a bit on fuel.

Limit Those Power Drainers

In a pinch and low on fuel? Switch off non-essentials like lights, AC, and heaters. But mates, be sensible. Don't drive in the dark without headlights. Safety first!

Give Your RAM 2500 a Regular Check-Up

Your truck's health matters! A well-maintained RAM 2500 sips fuel, but one that's not up to snuff? It'll guzzle petrol like it's going out of style.

Spark Plugs

When spark plugs are misbehaving, they can cause your engine to stutter and waste fuel. Keep them in tip-top shape, and your engine will run smoothly and efficiently.

Filters

Now, filters - they're the unsung heroes. A clogged filter can cause your engine to work harder. Swap them out regularly, and let your engine breathe easy.

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Oil

Good ol' engine oil – it keeps everything running smoothly. Make sure you're using the right type and changing it when needed. Your RAM 2500's engine will purr like a kitten and use fuel more efficiently.

State of the Engine Components

Let's be honest, everything wears out with time, even those trusty RAM 2500 engines. As things wear down, you'll notice the engine might not be as sprightly as it once was. And that, dear friends, can cost you more in fuel.

When you're scratching your head wondering why you're filling up your tank more often, even though you've been good to your RAM, it could be down to the wear of critical parts. Here are a few culprits:

• Cylinder-Piston Group. Nicks in the cylinders, burnt pistons, and nasty deposits can all disrupt how your engine runs. This, in turn, means your truck has to work harder and drink up more fuel;
• Valve Wear. Loose valves are no one's friend. When they don’t seal properly, excess fuel might sneak into those combustion chambers, leading to a thirstier engine without the extra vroom. Over time, this can lead to other problems like leaks and that unpleasant grinding noise;
• Worn Out Bearings and Crankshaft Play. Your crankshaft should be as steady as a rock. If it's wobbling about, you're looking at a loss of power and a bump in fuel consumption.

Checking the Mixture

Fuel and air need to be in perfect harmony to keep your RAM 2500 running smooth. If the scales tip too much towards fuel, it's called a rich mixture, which isn't great for efficiency.

If your engine starts sounding like it's about to throw a fit when you hit the gas, and you're seeing more smoke from the tailpipe than you'd like, you might be running rich. Causes could be a dodgy pump, an ECU on the fritz, or maybe even a leaky injector.

Any Warning Bells?

Modern RAM 2500 trucks are pretty smart. They'll usually give you a heads up if something's amiss. Any unfamiliar lights on the dashboard? Especially that 'Check Engine' one?

Hook it up to a trusty OBD-2 scanner. Any issues detected could be leading your truck to drink more fuel, often because of misbehaving sensors feeding wrong data to the truck's brain, messing up the fuel mix.

Consider a Performance Programmer for Your RAM 2500

Now, these modern beasts have quite the brain, but sometimes we can give them a little nudge in the right direction. Enter the programmer – this handy device plugs into the OBD-2 and lets you tweak things to your liking.

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Link it to your smartphone, and you're in control. Dial it in right, and you might just see that fuel consumption drop a touch without making your truck feel like it's pulling a caravan uphill.

Wrapping Up

There's plenty of strings to our bow when it comes to keeping your RAM 2500 fuel efficient. Some things might be down to general wear and tear, others just require a bit of TLC. Either way, take good care of your truck, and it'll return the favor.