Loaded pulling a 28â enclosed car trailer at 75-80 gets 8. It's always hard leaving your family behind. Van Alstine of Sandusky, Michigan, did the machine work on the 6.6L engine, which included a keyed crank, and cut and coated pistons. With the two Duramax diesel engines being so drastically different, it doesnât make much sense to compare them head to head. b) build a mount in the el camino. How to upgrade power, torque, and MPG in a GMC Sierra 2500HD Denali 6.6L Duramax combining tuner, cold-air intake and DPF-back exhaust. In light duty use, these gas engines will deliver fuel mileage somewhat close to what you'll get with a finely tuned diesel, but the diesel will still maintain a 10-30% fuel mileage advantage in identically geared trucks. In your case you are defying all laws of aerodynamics; your truck is never going to get 20 to 25 MPG because the resistance it is going against is too great; your options are to either go with a smaller tire size and lift or accept a subpar fuel economy. Very little Interstate driving. â (Photo courtesy Chevy) In a surprising move, the 2021 Chevy Silverado 1500 Duramax diesel will see a big drop in the stated MPG ratings versus the prior year, and nothing significantly changed from the 2020 model.. All have been Duramax engines until last year and I went with the 6.6 gas. + Even Better MPG's. 2016 GMC Canyon 2.8L Duramax turbo-diesel The mpg advantage comes at a premium, however. Offering up to an EPA estimated 30 MPG highway, the Duramax 3.0L Turbo-Diesel not only gives you the most efficient Sierra 1500 ever, but is an ideal powertrain for off-road adventurers with a powerful 460 lb-ft of torque and best-in-class 277 diesel horsepower. Fuel Economy of the 3 Most Common 6.6-Liter Duramax Diesel Trucks. To dethrone the Ram EcoDiesel, the Colorado will have to reach a town/highway rating of at least 22/30 mpg. GM might have showed up a bit late to the modern diesel party, but when it did show up, the joint-venture GM-Isuzu 2001 Duramax V-8 LB7 did so with all the latest technology and efficiency expected of a modern oil-burner. I have an 06 duramax. It's no secret that a Duramax diesel is not known for fuel economy. But my next truck may more than likely be a duramax. I guess you could say that 75% of my driving is rural, 15% city, 10% Interstate. The EPA has released complete fuel economy figures for the 2020 Chevrolet Silverado with the turbocharged 3.0-liter diesel Duramax LM2 inline-six engine. Lv 5. I drive fast and donât baby it just to get a few more mpg. I get 16 to 18 for the type driving that I do. Very little big city driving. Other trucks using the engine offer comparable ratings. Me and my Dad are pretty handy and have done tons of maint. The 3L Duramax is available on LT, RST, ... A 2WD Ford F-150 diesel will get you 30 mpg highway and 22 mpg city, dropping to 28 and 21 mpg, respectively, on the 4WD models. Letâs say that you don't have a lift or big tires, so your aerodynamics are in check. All of the Duramax powered trucks are equipped with 3.73 differential gearing. The 2020 Chevrolet Silverado and its optional 3.0-liter Duramax inline-6 turbodiesel engine will deliver up to 33 mpg on the highway, according to the EPA. The exact MPG any engine gets depends on the vehicle it's used in, but the 6.6-liter Duramax diesel engine gets an EPA-estimated 15 MPGs in city driving and 20 MPGs on highway driving in the 2011 Chevrolet Silverado. You should be able to get 20 or so. Well, we get this question all the time and the truth is Duramax engines benefit the most from the addition of an aftermarket diesel pump; more than both Cummins and Powerstroke owners. Some benefits include, improved life of the injection system, ⦠He has tranny mods and 33s. 1 decade ago. Long road trip a few months ago I was able to avg 24 mpg on the highway. 0 1. sethle99. Drafting behind an 18 wheeler always helps with your MPG. I am basing my figures on 36,000 miles a year which is my average. Plus its relatively modest size in comparison to most modern trucks meant it would be much easier to bounce around the farm or park in town. I hope that you didn't buy a diesel just for the perceived MPG advantage. It's a blast to drive now. The 2.8L diesel adds $3730 to the Monroney versus a gasoline-powered V6 engine for the pair of trucks. General Motors created a buzz when they released a small block inline 6 3.0-liter Duramax diesel for a variety of trucks and SUVs like the 2020 Chevy Silverado 1500 and newly updated 2021 ⦠The biggest gains you will see are with ECM and TCM tuning, ⦠... and if you are easy on the pedal you can squeeze 30 mpg out of it. When I do strictly Interstate, I have seen 21mpg. In any way it will be really low. Chevy announced the ⦠Im not sure which engine he has. The Chevrolet Silveradoâs 3.0L Duramax inline-six turbo-diesel engine sees a drop in fuel economy ratings for 2021. If his son takes it, he can get no better than 18 mpg. Branding the smaller engine with a Duramax label has riled Duramax purists for years, and itâs not hard to see why. and engine pulls/rebuilds etc. No turbo lag and rips off the line. Chevrolet Silverado 1500 Duramax Highway MPG Is Directly Linked to Highway Speed. Join the thousands of diesel truck owners why discovered the best way to increase your Powerstroke, Duramax, and Cummins diesel truck's fuel mileage is to upgrade with a MPG Performance Module. The original LB7 Duramax was pulled and given a thorough rebuild using top-quality hard parts. 2020-2021 2WD Silverado 1500 trucks get 23 miles per gallon in the city and 33 miles per gallon on the highway. Similar to the F-150, the Duramax-powered Chevrolet Silverado 1500 turns out its best fuel efficiency numbers at lower highway speeds. When it comes to tuning a duramax some know exactly what they want but others want to review their options. c) well basically all the engine work etc. We have a customer who has a really nice 7.3 Powerstroke that we take care of. (open to different models.. he used a Lmm or Lyy i think. Your mileage may vary, but so far the 3.0L Duramax hasnât quite lived up to the 33-mpg hype. Fuel economy is also very impressive, with up to 22 mpg in the city and 30 on the highway for 2 wheel-drive models. I get to drive a new set of wheels every week thanks to this wild job, ... equipped with the exciting new Duramax diesel engine. MPG dropped to 15 city and 20 highway. I will not give hard MPG figures because mine change for all sort of reasons. Diesel engines are known for their efficiency and durability, but when youâre talking about the 2020 Sierra 1500 pickup truckâs available 3.0L Duramax Turbo-Diesel engine, thatâs just the beginning.. With up to 30 MPG highway â on 2WD models, 460 lb.-ft. of torque, 277 hp and a max towing capability of 9,000 lbs. All of the diesels have averaged over 36,000, 18.3 to 18.4 mpg. I can say that my conversion from gas (8.1L) to the Duramax LBZ netted me 30 to 35 ⦠I have 2015 2500 Duramax. That's okay though, we get it and it can be done. Lv 4. What benefits can you get by adding a FASS Titanium Series diesel fuel pump to your GM Duramax diesel pickup? He drives the truck very easy and to be honest, you would think the throttle pedal was made of glass and he was afraid of breaking it by pushing to hard. My duramax is stock at the time and I get around 15 around town and 18-19 highway. When tuning diesels became a possibility about 20 years ago there were few options available with little variation. Im mainly interested in a diesel because its unique and I can get upwards of 30 mpg. a) buy a duramax engine. Added the Duramax tune with tranny and it's like a whole new truck. The possibilities to tune a duramax are so vast with more options coming available monthly. I live in a rural area so I am on 2 lane highways a lot or county roads. A 2005 Duramax I heard got about 15 MPG on a 5 hour trip. My 16 gas 6.0 ccsb gets on average 11.5-12 empty for a tank of gas. My buddy has a 2500hd with the 6.0l and has 6" with 35's and has never got better than 10 mpg, and averages about 9. So, whatâs up? 1 0. michael_stewart32. Today's the day I had to leave my family to go home. 2020-2021 GMC Sierra 1500 trucks with the 3.0L Duramax get 23 mpg in the city and 30 mpg on the highway. Fuel Economy varies on 3.0L Duramax equipped vehicles. The Chevrolet Silveradoâs all-new 3.0L Duramax inline-six turbo-diesel engine offers segment-leading torque and horsepower, in addition to a focus on fuel economy and capability. The maintenence does cost more with a diesel, but you get get better mileage with it. Official economy estimates are not available at time of publication, but my numbers were, more or less, in line with the 30-plus highway mpg ballpark GM ⦠If you are just looking for more MPG's out of a light duty truck that gets 30 MPG stock consider yourself greedy. I commute to work about 40 miles each way on rural 2 lane highways, 55 mph speed limit. Many owners report seeing 23-24 mpg with the cruise set at 80 mph, but 27 to 29-mpg when cruising at a more docile 65 to 70 mph. Friend of mine with an 2001 F-150 is getting 30 MPG at 60 mph on the highway. But there is more than one way to increase the fuel economy on a Duramax diesel and save money on gas. He constantly get 25-26 mpg with that truck. MPG increased a little but not much since I have my foot in it most of the time. When people shop around for trucks of any size, in addition to torque and towing capacity, they likely want to know the miles per gallon that theyâll get out of it. Duramax diesel engines are made to enhance fuel efficiency so that you get the most miles per gallon out of your truck that is possible. This Inline-4 cylinder duramax diesel engine is also one of the quietest and cleanest diesels GM offers. Gain up to 5 MPG more miles per gallon with your diesel pickup. Duramax MPG for 5 Most Common Trucks. They will get much better milage than the equivilant gas engine, so it may even be better than that. Whatâs done, if anything to thereâs trucks getting 20 some plus empty and teens pulling heavy loads. To build a truck that will excel in both sled pulling and drag racing, a potent powerplant is a must. 33-MPG or Not, the 3.0L Duramax is the Most Efficient. Weâve seen trucks come close in 99-percent, steady-state highway cruising, but most hand-calculated fuel economy numbers for 4x2 model Silverados range from 27-mpg to 31-mpg. The effort is anticipated to be realized using a 2.8-liter four-cylinder Duramax motor, which will probably generate 181 hp and 369 lb-feet of â¦