C15 vs isx mpg. I drove an L9000 truck and dog with a 12.
C15 vs isx mpg MPG, dependability, and reliability do. Mar 5, 2025 · Understanding the Different Cummins ISX CM Versions: A Guide for Truckers The Cummins ISX engine has gone through several electronic control module (ECM) versions over the years, each introducing new technology, emissions regulations, and efficiency improvements. Fuel mileage is great. Apr 21, 2018 · I was looking at 2017 T680 with the Cummins ISX 400 and the 2017 T680 with the Paccar MX13 405. Dive into the ultimate engine showdown in this compelling speech comparing the Cummins X15 vs CAT C15 two of the most powerful and reliable diesel engines in the trucking industry. Jul 24, 2014 · Cummins has stated that the newest ISX 15 can deliver up to 2 percent better fuel economy than previously reported. If you had to choose, which would you go with? Looking for some solid advice on this and know I came to the right place. Jan 16, 2025 · Explore the differences between Cummins ISX15, X15, and 2027 X15, and find quality gasket solutions to keep engines running strong. Two of their engines in particular, the N14 and the ISX, continue to remain popular diesel choices. also check your egr cooler you might be loosing coolant there. 5 L and a ISX is 15 L. The big Cat that cold be tuned to over 2100 ft lbs was for other units such as Newell with their ZF 10 speed transmissions. I reset the computer MPG every time, and established an average. In contrast, the 6NZ Cat does not achieve the same fuel economy as the 60, and Cat parts tend to be more expensive than those for Detroit. C16 Cat 60 Series Detroit – These Detroit engines are the only ‘newer’ diesel engine in the best semi truck engines. Yeah, no expencive EGR issues, but all other parts are more expensive So it is dificult to advice what engine is better to have in your truck. In terms of power output, the C15 ACERT is designed to deliver improved torque and horsepower while maintaining excellent fuel economy. I wasnt impressed with the c15 i used to drive compared to the the 3406 we had with more miles set at 550. Jan 3, 2023 · Click to learn more about the history of the Cummins ISX engine as well as common issues with the engine and its cylinder heads. Engine builders at Capital Reman Exchange performing line boring on an engine block. In this compelling comparison, we dive deep into the world of diesel powerhouses—PACCAR, CAT C15, and Cummins ISX. C15 Cat – the C15 and C16 Caterpillar diesel engines were workhorses. . I am tired of my Detroit series 60. John Deere has to make the same basic 619 ci scream to make Horsepower NOT torque. You will gain a little horsepower with a basic ISX15 but where you are going to make the gains are in the torque where the real work is done. The newest Cummins ISX 15 operational efficiency actually delivers more horsepower than in older ISX engine models. Also Cummins parts are available almost at any semi dealer. I have tried everthing to improve my cat. Sep 4, 2012 · Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. Jan 18, 2009 · Truck Maintenance - reviews or opinions on Cummins ISX - Would appreciate any reviews or opinions on Cummins ISX. Apr 9, 2024 · The ISX engine’s durability gives truck operators and fleet managers confidence in its performance. Read about the differences between the 3406E, C15, and C15 Acert. Never driven a truck with a c15 acert but hear they are pigs on fuel. My trailer is a step deck, running empty I got 11+. This past week i made a run to beausejour and back home which was almost 600 miles round trip. Feb 7, 2018 · Also creaming a deleted 600hp Cummins and running neck to neck with 750hp Bully Dog tuned C15 Cat with fuel economy. Caterpillar C15 vs Cummins ISX — which diesel engine truly rules the road? In this detailed, no-nonsense comparison, we break down performance, torque, fuel economy, durability, maintenance, and Aug 5, 2011 · Forums > The Garage > Trucks [ Eighteen Wheelers ] > early ISX vs S60 vs C15 fuel economy Discussion in ' Trucks [ Eighteen Wheelers ] ' started by Davo81, Apr 11, 2018. Mar 11, 2018 · You're john Deere is 12. com Google Aug 26, 2007 · Cost difference C15 v ISX Discussion in ' Trucks [ Eighteen Wheelers ] ' started by CMoore, Aug 23, 2007. 4. Jun 15, 2025 · DD16 vs X15 vs C15?? Need a strong reliable engine for an 11 axle logtruck pulling 170-200k+ a day The conversation revolves around discussing the best engine options for heavy haul trucks, with Nov 11, 2025 · Rawze. But the latter engine has a unique blood relative called the C18—an engine capable of making 1,000 hp in factory form. Got an isx15 with 700k and still going strong. Feb 2, 2014 · a 2007 cummins isx still should be pre dpf and it will only have the egr system. C15 has Multi-Torque (MT) Operation For best balance between fuel economy and performance requirements on line-haul vehicles with 80,000 lbs. newer paccar engines Discussion in ' Questions From New Drivers ' started by ad356, Dec 19, 2018. My average since I bought the truck is 7. The c15 was set the same. iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines Cummins ISX-12 & ISX-15, fuel "economy" iRV2. The right engine is crucial for efficiency and performance, and selecting the right one can save you time and money down the road. Nov 26, 2017 · Jump to page : 1 Now viewing page 1 [50 messages per page] Feb 26, 2012 · Jump to page : 1 Now viewing page 1 [50 messages per page] Jump to page : 1 Now viewing page 1 [50 messages per page] Aug 7, 2013 · I am in the market, for a different heavy truck,for farm use only. Dec 18, 2003 · ISX vs C15 fuel economy (and 379vsW900) Camstyn May 31, 2005 1 2 3 Next May 31, 2005 #1 Dec 27, 2008 · The ISX has the best fuel mileage and you at least know that Cummins is gonna be in the truck engine market longer than CAT. the egr system on the year is easily disconnected, once you do that the isx is a good motor. Also, it has auto transmission (Freedom Line). Read our blog and learn more. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / Fuel Efficiency differences 870 vs 871 Sep 15, 2023 · The ISX is more of a direct injection type of device than the N14. Oct 26, 2008 · I have a 05 c-15 accert 550 hp and a 07 475 isx my cummins will pull side by side with my cat. But if you're chasing fuel economy above all else then the Detroit is probably the go. The ISX 650 and the Cat C-15 650 were pretty close, but Cummins chose to detune their torque for the Allison 4000. Mar 27, 2024 · In the modern age, the Cummins ISX, Detroit DD15, and CAT C15 are generally regarded as some of the most competent workhorses in this category. I am in the process of buying a W900L and have narrowed my search down to about 5 trucks. Whether you're a trucker, fleet manager, or diesel enthusiast, this speech Sep 15, 2023 · Caterpillar engines are a cornerstone of diesel engine technology. The C-15 is a decent motor but the power isn't there like the other CAT motors. 3 with my old truck, now I get 4. Feb 3, 2009 · Owner Operators Forums - C15 Cat and ISX Cummins - I am trading my truck in for a newer one. I don't like the required ELD, getting used to that as well. Dec 1, 2010 · I am in the market, for a different heavy truck,for farm use only. From experience, what have guys/gals, found to be the most reliable? Thanks . Aug 1, 2011 · Just as Cat couldn't match a Cummins ISC 350. ISX is HPI system engine. If you're working on an ISX engine or considering upgrades, knowing the differences between these ECMs is crucial. The X15 are very similar in general performance and the differences you are noting are very great, especially the fuel economy where the DD16 is very low and it is suppose to excel. We already have 2 C15's that we haul with that are rated 435 hp. Unjectors are fuel pressure controlled with four solenoids. The fuel economy was poor. Visit us today and learn more about Cummins diesel engines! Feb 2, 2010 · Which would be prefered for a farm truck that might get 5K miles a year? 2004 ISX 2003 ISX 2003 C15 They all look the same bing IH 9200 or 9400's Susposedly ex walmart trucks. Apr 13, 2018 · Yes it is a bit thirsty but I'd rather it cost me a little more in return for having some action when I press the go pedal. Mar 13, 2017 · older cat vs. Jun 26, 2010 · ISX is better, more hospower, higher MPG, less noise, but more expensive maintanance. They were also reliable, not bad fuel economy and had great warranties. Nov 29, 2016 · It will also effect the effiecent/effective operating range of the engine or the "rpm sweet spot". On the other hand, the Cat engine provides superior horsepower and torque. Which of the 2 engines would you prefer?And why? What are your experiences with each one?Good and Bad? What kind of fuel mileage have you gotten with these engines at speeds of 85 to 100mph? & Aug 10, 2008 · not nearly 30 years experience under my belt but for me #1 would be 3406E-C15 pre acert #2 pre EGR 12. Ive never driven a MX-13, but I can say the ISX-15 is nice from 1250-1800/1850, cruise about 1400/1650rpm depending on grade/load, gets poor/reasonable/exellent fuel economy depending on your foot. Cat did so, too, both being limited to 1950 ft-lbs. I have started to do more research on the closest two just for Any cummins after 2014-15 seems to have a lot less problems than the years prior, not as many electrical problems. Despite their shared history in the Cummins lineup, the N14 and ISX are very different engines. "sweet spot" - I did a test last trip which is as follows: Ran 55, 60, 65 mph in both 12th and 13th gear, all for at least 10 miles on completely flat terrain (I-29 in North Dakota) with steady conditions. Apr 19, 2022 · Cummins x15 vs ISX15: While the ISX series used to be the most popular choice among people when it came to engines for your motorhome. Mar 7, 2021 · Home » What Are The Primary Differences Between Cummins Diesel ISX and N14? Cummins has a history of producing strong, long-lasting diesel engines, including some of the most popular ones for on-highway applications. 7 #3 ISX, #4 c12 , In my experience bushings in frames and u joints are cheap compared to a new truck and the older engines were more efficient and reliable due to emission bull crap on engines past 2001. Dont buy the "cats get horrible fuel mileage" line they do just fine with a competent driver. I've put the wagon before the horse here so I hope it works out but if it is awarded to someone else, best luck to them, I won't lose any sleep over it. Feb 16, 2015 · Are you buying a new semi truck or replacing the engine in your current one? If so, you're probably weighing the differences between the Detroit DD15 and the Cummins ISX. Big block diesels last forever too. I know some guys that have had pretty good luck with the early Accerts. I drove an L9000 truck and dog with a 12. At those ratings for each engine and the trucks being '03 freightliner Aug 25, 2013 · Jump to page : 1 Now viewing page 1 [50 messages per page] Jan 16, 2014 · Jump to page : 1 Now viewing page 1 [50 messages per page] Jul 22, 2019 · I like my 3406's and the c156nz's have a great reputation as well. The engine is available in various horsepower ratings ranging from 400 to 650 horsepower, with torque ratings ranging from 1,450 to 1,850 lb-ft. Can any one Nov 16, 2013 · Huskyhuskie 34 posts · Joined 2012 #5 · Nov 23, 2013 c16 vs c15 Stay away from C16s unless when it was rebuilt last it had the block cut correctly (hard to find) and has the German 800hp gen set liners in it. So what make the two different from each other? Why did Cummins make the Jan 24, 2010 · I run mostly our isx and find it an awesome engine with equal engine brakes. Thank you. May 3, 2023 · The Cummins ISX engine was first introduced in 1998 and has since become a popular choice for heavy-duty trucks. 7 and it was a bit of a hill detector. I Nov 21, 2023 · Plenty of power. or less, use the following guidelines: For 9, 10, or 15 speed single overdrive transmissions, gear to cruise at: 1550 rpm @ 65 mph for 410 hp and below 1500 rpm @ 65 mph for 435 hp and above If fuel economy was not a big deal I'm almost certain I'd be going with a Pete but I am think the WS is the best trade-off. 5. Sep 18, 2024 · The biggest differences between the 3406E, C15, and C15 Acert engines might be bigger than you think. Hauled wheat there with our old steel super b so i could bring limestone from stonewall back home. Some runs I used to get 3. 2, same run I now get 7. Jul 12, 2014 · Hello everybody, I was pointed to this site on another forum since I am trying to learn more about the CAT C-15, C-16 and the 3406E engines. Dive into the diesel duel as we compare the Cummins ISX and Detroit DD15 engines on performance, efficiency, and durability. Now is the waiting game to see if I win the bid tender. 7, or Cummings N-14 Discussion in ' Experienced Truckers' Advice ' started by OkievilleTrucker, Oct 8, 2011. Mar 9, 2010 · We were looking at buying a couple more tractors and most of the used tractors that we were looking at have 430 hp C13's. Oct 18, 2009 · Owner Operators Forums - Speed vs. Cost-Effectiveness Caterpillar C15 vs Cummins ISX The Caterpillar C15 engine is known for being a cost-effective option for heavy-duty trucks. Good luck xsetra, Nov 21, 2023 #4 Apr 11, 2018 · 6nz vs x15 cummins Discussion in ' Ask An Owner Operator ' started by Blkcowboy, Aug 23, 2018. Nov 29, 2023 · Discover more about the Cummins ISX engine history with the experts at Big Bear Engine Company. Explore the article and get comprehensive guidance on Cummins ISX maintenance. If high power is a priority, the Cat C15 would be the preferable option. I am interested in getting one. Mar 26, 2005 · ISX vs C15 fuel economy (and 379vsW900) Camstyn May 31, 2005 Prev 1 2 3 Next Jun 1, 2005 #16 Dec 13, 2023 · On the other hand, the C15 ACERT engine incorporates advanced technology such as ACERT (Advanced Combustion Emissions Reduction Technology), delivering enhanced fuel efficiency and reduced emissions. In terms of reliability, the MP8’s have had a consistently better track record than the ISX 15 Cummins. I realize the C13 is a smaller engine. The big question, is what to power it with? C15 acert or isx. Jul 17, 2025 · Wondering which Cummins ISX15 and X15 parts are interchangeable? Discover key compatible components and differences between these two powerful diesel engines to make informed maintenance and upgrade decisions. Whether you Oct 8, 2011 · C-15, Detroit 12. May 12, 2025 · Caterpillar C15 vs Cummins ISX (2025) – The Ultimate Diesel Engine Showdown Which powerhouse diesel engine dominates the road in 2025 — the legendary Caterpillar C15 or the modern, fuel Aug 29, 2022 · The Efficiency Series X15 was obviously geared toward fuel economy, and it delivered a 3-percent improvement over ’16 model year ISX15’s and a 10-percent increase of 2012 engines. The reason why people like the x15 so much is because it has the best regen system available on the market, couple that with a high mile per gallon efficient motor and you have a profitable truck. Old truck MPG was 6. Most people get confused when they look at how to maintain the Cummins ISX engine. vhkdfmlutgkaqgsbcpbxpqmxyfplznchnnimgunjfwzekmrtgbpkopgsipgnidtaypxdhbyq