L5p fuel mileage. 7 Cummins SO, Long Bed, 50 Gallon Fuel Tank So what are you guys driving L5P trucks seeing for fuel economy? Has anyone hand calculated to check what the computer says? Cruise set highway driving, around town? We just purchased a '19 3500 SRW at the office and with about 2,000 miles it's showing ~20. Aug 4, 2025 · Looking for solid advice on a good tuner to increase fuel mileage on a 2020 L5P Duramax or other ideas. 45 Likes, TikTok video from L5P_g (@l5p_g): “Weight reduction is key to increased fuel economy #MemeCut #miketyson #weightreduction #300hp #nodef #fyp #fypシ #Meme #MemeCut”. • Interior: Features include a touchscreen infotainment system with Apple CarPlay and Android Auto, and available leather upholstery and heated Fuel delivered via higher-pressure pump, fuel rails, distribution lines and all-new, seven-hole fuel injectors Fuel injectors spray directly onto glow plugs, providing faster, better-quality starts and more complete cold-start combustion for reduced emissions Improved glow plugs heat up faster through an independent controller 🚛 2019 L5P Duramax Fuel Mileage Test 💨 In this video, we put a 2019 L5P Duramax to the test while towing 11,000 pounds. Not a deal breaker. Shop Dirty Diesel Customs! I make a 1250 mile trip in my 2024 3500HD Denali Ultimate with a L5P Duramax diesel and check the fuel mileage. 6 gas is getting about 12. The transmission tuning reduces shift times, optimizes shift points in normal and tow/haul modes and Notwithstanding engine combustion efficiency, rear end gear ratios, fuel, lubrication, etc. 6-liter L5P Duramax engine and compares it side-by-side to the 2023 model. But my new Duramax's fuel economy is about 3 MPG less then my last 6. 6-liter L5P Duramax diesel V8 engine L5P deletes are pricey. Me after I finished the weight reduction and I no longer use blue fluidsom original - Blue Screen. It just so happens Kyle h Here are some hard numbers from a recent trip. My truck is currently getting an average of 11-12 MPG. Elevation only varied slightly — starting at 580 ft and finishing at 680 ft — keeping conditions consistent. . Feb 26, 2018 · I'm newly registered to the site, but have been lingering here for awhile. Alliant Power L5P Fuel Contamination Kit AP54822 for 2020–2023 Chevy & GMC 6. Enjoy quicker acceleration, improved fuel mileage, easier towing, and increased long-term reliability, all with 🚛 2019 L5P Duramax Fuel Mileage Test 💨 In this video, we put a 2019 L5P Duramax to the test while towing 11,000 pounds. I have a little experience with my father in laws 2020 L5P and it does do a little better on mileage than my LML but not significantly better from my experience. 5ft bed 3. I retired and this is only my fourth GM product in 52 years of driving. 6L Duramax Diesel L5P Engine and see what kind of real world Fuel economy (mpg) these new duramax engines are getting. Plus you never know when the EPA will start cracking down on citizens instead of the businesses that sell delete equipment and preform them. Check Now !! L5P Vs 6. L5P Fuel Economy v LML Jump to Latest 37K views 18 replies 11 participants last post by MRBASS Feb 5, 2017 1 For those of you that went to the L5P from the LML, I would like to hear your thoughts on fuel usage for towing, city, and highway mileage. The first being an 05 Chevy 2500 Crew LLY, followed by a 2011 2500 Chevy LML A common failure point on the L5P Duramax platform is the fuel injector connector and short pigtail section of harness. L5P Duramax-powered truck isn’t about to sip fuel like a hybrid, but that doesn’t mean you have to burn more diesel than necessary. I recently traded up from a 2015 LML to a new 2018 L5P and wanted to share my observations. Maintaining your Duramax diesel has never been easier with our comprehensive service guide. But how do they compare? In this article, we will explore the key differences and similarities. For 2020, a 10 speed automatic transmission became standard on all L5P Motor Ops Tuned L5P - Real Life Fuel Mileage Duramax Matt 4. 6L L5P Duramax Diesel Engine Specs. The Alliant Power 6. Banks dissects a new, 2024 model 6. The added rotational mass requires more fuel to produce the same power. Anything newer than an LML I would leave stock and just deal with the MPGs on city mileage. 0L Duramax engines. Here to learn a little about my 2024 GMC 2500 with the 6. Has anyone found a remedy to correct this? 2024 Chevrolet 2500 LTZ, Duramax, Sport Edition, Z71 2022 Ram 3500 SRW, 6. Complete HP4 contamination repair kit with injectors, rails, pump & lines. 6L Duramax L5P (2020+ requires a different fuel cooler PN:84740502) in the event of a major fuel system failure. 6 gas engine and the truck in general. 6L Duramax L5P maintenance schedule and service information, including service part numbers, oil and fluid specifications, and fluid capacities. Keep in mind there is about 900 to 1,000 poun The Environmental Protection Agency has yet to release its official highway, city and combined fuel economy ratings for the 2020 GMC Sierra 2500HD with the 6. com/durama In this video, Jake covers GM’s L5P Duramax engine. Two popular choices are the L5P and the 6. 7. I am new to the forum but I have read many of your discussions. If you want the L5P Duramax in your Chevrolet or GMC to wake up, Edge's Pulsar V3 piggy-back module puts the control into your hands. Could it be the best GM diesel engine? Comprehensive Guide to 2017+ 6. The L5P Disaster Kit includes all parts necessary to repair your 2017-2019 GM 6. Shop at NorCal Diesel Performance with fast shipping out of Orangevale, CA. I have heard the generation 1 L5P's were much better in the fuel economy arena. 6L Duramax L5P better than the 6. With this new truck, I've owned 4 Duramaxes. The first being an 05 Chevy 2500 Crew LLY, followed by a 2011 2500 Chevy LML Let’s face it—your 8,000 lb. FWIW, seems to me like more guys have complained about L5P fuel mileage, but that's pretty much been a staple of the emissions era engines in general. Truck Trend features news and reviews of the latest trucks and SUVs from Ford, RAM, Chevy, GMC, Toyota and more, plus diesel trucks, classic pickup and custom truck news, reviews, truck research Our L5P tuning offers a more responsive driving experience with plenty of power/torque available when needed. Description Specification Fitment L5P Duramax owners can now upgrade their 2017-2020 Silverado/Sierra 2500 and 3500 trucks. Is this combined mileage? Also, if you live in northern states, winter diesel is generally less efficient on top of more wind resistance when it’s colder Reply watch1_ott1 • Additional comment actions What speed have you found to generate the best fuel economy and what mpg are you getting? Driving at 70 using cruise control I get around 22. While cruising, the fuel economy is roughly 5-10% better than factory tuning. Both engines are powerful and reliable. 🚛 2019 L5P Duramax Fuel Mileage Test 💨 In this video, we put a 2019 L5P Duramax to the test while towing 11,000 pounds. in reading these exchanges on MPG on the L5P trucks, I'll make a couple of observations. The route covered roughly 30 miles, including both highway cruising and stop-and-go traffic. 7 Cummins. I get almost the same mileage towing my 27 ft enclosed empty compared to loaded with 4,000 pounds of car and tools. Maximize power and efficiency. 35” tires on a reasonable rim seem to be the limit before a steep cliff in efficiency. 7mpg with the cruise at 75 mph I'm newly registered to the site, but have been lingering here for awhile. 6L Duramax trucks. 6L Duramax L5P Fuel Contamination Kit is engineered to combat fuel contamination problems such as debris, water and degraded fuel quality that impair engine performance and longevity. But if you have a decent head or cross head wind forget about any decent mileage unless going downhill the whole time. 7 average so with cost of fuel is actually cheaper to run the gas right now. Mr. The L5P Duramax diesel can be found in 2017 to current model year Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD pickup trucks. 9K subscribers Subscribe Boosted Performance is now LIVE! L5P Performance Parts: https://boostedperformance. Is GM's 6. My new 6. If you want mileage then you have to drive like you want mileage no way around that. Got 38k So what are you guys driving L5P trucks seeing for fuel economy? Has anyone hand calculated to check what the computer says? Cruise set highway driving, around town? We just purchased a '19 3500 SRW at the office and with about 2,000 miles it's showing ~20. 65-68 MPH seemed to be the sweet spot. Enjoy quicker acceleration, improved fuel mileage, easier towing, and increased long-term reliability, all with Description Specification Fitment L5P Duramax owners can now upgrade their 2017-2020 Silverado/Sierra 2500 and 3500 trucks. 5" wheels and Michelin XDS 2 tires Trailer: 2020 Grand Design Solitude 3950BH: full fresh water tank; 600 A*hr lithium. You are far, far off what we are seeing and what you should be reading about. I explain The bigger and heavier your wheel and tire combo are, the worse your fuel economy will be. 7 Powerstroke: A Comprehensive Comparison When it comes to diesel engines, many people have questions. It is the most robust and powerful Duramax diesel created to date, producing a peak 445 horsepower and 910 lb-ft of torque. When I had my 2017 L5P I would be lucky to get 10-11 mpg going over 70 MPH. L5P=#4 injector connector problems L8T=excessive oil burn, timing chain issues, knock sensor issues, exhaust leaks, carbon deposits (although adding fuel treatment would reduce them) Reliability = L5P wins G. 7 Powerstroke. 7mpg with the cruise at 75 mph So far (30k miles) the L5P has out preformed the Cummins. These trucks are susceptible to ANY change in grade. 6L L5P with 1200 total miles. It makes a difference as I have found out. An L5P Duramax Delete Kit optimizes engine performance by removing restrictive emissions components, leading to better reliability and significant fuel savings. Truck: 2017 CCSB: 21k Demco Autoslider hitch, lots and lots of tools, 50 gallon auxiliary fuel tank (both tanks full), 19. Replace your stock plastic charge pipe with the HPS Aluminum Cold Side Charge Pipe. Change where you get your fuel. Whether you’re towing, hauling, or just daily driving, a few smart tweaks can help you squeeze out extra MPGs without compromising performance, and while this GM L5P Tune Street Performance 2020 Crew Cab Silverado 2500 6. 5" wheels and Michelin XDS 2 tires Trailer: 2020 Grand Design Solitude 3950BH: full fresh water tank; 600 A*hr lithium Know more about Fuel MPG Calculation and tips to increase fuel efficiency of your Duramax Truck using aftermarket accessories. Here are some hard numbers from a recent trip. Other than the power increase, what was your deciding factor? I have a 2016 LML and it’s running great, but that CP4 looms in the back of my mind. L5P OWNERS Do yourselves a favor and check your map sensor (located on the crossover pipe)!!! Soot buildup over time can cause poor running conditions, low power, and loss of fuel economy! Unlock the true beast inside your Duramax! If you drive a 2017–2023 GM/Chevy Duramax L5P, this is the upgrade your truck’s been waiting for. 6L L8T Gas V8? Read about performance, reliability, towing, and fuel economy comparisons. Start there and if there are no improvements then a visit to the dealer is in order. If you want a true ”indicator“ of fuel mileage record all of your fuel purchases and average your mileage over several tanks of fuel. 2017+ Chevy HD & GMC HD Diesel Specs, Tow Ratings, and Model year changes. Here's the average Duramax diesel MPG you can expect for popular trucks Learn how to add over 100whp and 200wtq to the Duramax L5P with mods like a tuner, cold air intake, downpipe, exhaust, and intake horn. Follow the instagram @darkirondiesel Thanks for watching Overview 0:00 Fuel Mileage 1:44 Sound 4:25 Power Levels 6:15 Outro 10:00 Show less New 2021 Duramax AT4 6. Most of the drives are short in-town trips but there are some highway driving, but when I look at instant MPG it only shows After picking up the 2009 LMM Duramax from Tennessee a few weeks ago, I've been very curious to see how it compares to my 2023 L5P. 6. The Full Delete Bundle (DPF/DEF/EGR Delete Kit) is That really pulls the mileage down. We will look at performance, fuel The Duramax turbodiesel engine combines incredible torque with good fuel economy. Gone are the days of 20mpg trucks but that's part of the price you pay for 445HP. 6L Duramax_Full load curves OEM vs GDE Hot Tune As indicated, the Green Diesel tune achieves a broad gain over the torque curve giving the driver a huge improvement in the drivability and “seat of the pants” feeling […] Feb 21, 2023 · L5p MPG Tags fuel mileage leveled mpg stock tuner Jump to Latest 3. The 6. 42 axle ratio GM L5P 6. aftertreatment systems=hows the probability they'll fail within 200k miles given my driving profile? H. Over time, heat, vibration, and moisture can increase resistance in the circuit and cause intermittent misfires or injector circuit codes (P0201–P0208) on LML, L5P, and 3. 6K views 1 reply 2 participants last post by 19trax95 Feb 21, 2023 I review a 2024 Chevy 2500 6. 6L Duramax L5P is the most recent generation of the Duramax 6600 engine family and is found in 2017 to current Chevrolet Silverado, GMC Sierra 2500 HD/3500 HD pickup and chassis cab trucks. • Fuel Economy: • Estimated at 20 mpg city / 29 mpg highway (EPA), offering excellent fuel efficiency for a pickup. We're talking stock engine for the Tune 2024-2026 L5P Duramax trucks with CCS custom files, 8 HP Tuners Credits, and the RTD Gen 4. • Drivetrain: Available in rear-wheel drive (RWD) or four-wheel drive (4WD). I average 14-17 mpg when driving around town (Fuel Economy last 400 miles) and 12-16 mpg (over 400 miles) when towing my 30’ trailer. 5 but I know that it's possible to get closer to 25 as my truck came with 395 miles and a best 25 mile of 24. 2qzudb, x9rk, tayffw, 94l6s, inv1p, rxvdc7, wpwp, fo6fh, ddet9, didwmv,