Beginning with the 2018 Cornerstone models, the ISX15 will be replaced by the updated X15 platform. 2018 389 with the x15 efficiency over the first 88k miles not one issue. For the new performance version of X15, on the other hand, the engine braking is substantially enhanced. The new X15 Efficiency Series engine boosts fuel economy through downspeeding. The X15 Efficiency’s enhanced fuel mileage is a result of the Cummins and Eaton SmartAdvantage Powertrain, which precisely adjusts the engine to … Building off 3 key product attributes, fleets, operators, and owners can trust the Cummins X15 … The 2021 X15 Performance Series incorporated key product improvements launched with the 2020 X15 Efficiency Series and builds off the most successful product launch in Cummins history. Cummins unveils X15 and X12 engines. Not much difference from the paccar mx13 power wise but no check engine lights in 88k. Idle only for loading and unloading. Maybe it's just my imagination. The 2020 X15 Efficiency Series (400 to 500 hp) was notable for its 3.5% increase in fuel efficiency across the board over its 2019 predecessor, … But at Cummins, we’re never satisfied with the status quo. Cummins X15 vs ISX15. Regardless, I'd love some more feedback from x15 efficiency 500hp owners. Warm weather average 6,2 ifta down to 5.5 mpg in the colder weather. With the best “Percent Zero Touch” and lowest “Touches Per Thousand” metrics to date, Cummins expects the trend to continue with the 2021 X15 product lineup. The big-bore X15 Performance and X15 Efficiency and the medium-bore X12 were put through their paces on the research center’s 7.2-mile test track. The X15 efficiency and performance series engines are expected to begin a “limited production run” in the … Pretty good, considering it's a car hauler. The Productivity Series offering is comprised of two different engine hardware sets, common with either the 2020 X15 Efficiency Series or the X15 Performance Series. In 2020, Cummins is offering the same X15 Performance Series engine customers have come to trust. Unprecedented Power to Round Out the Portfolio – the X15 Performance Series. With over 12 months of product performance in North America – the 2021 X15 Efficiency Series is following the most success 15 liter product launch to date. The X15 engines will be in production before the end of this year, and the X12 will be available in 2018 after completing an extensive field-test program. So virtually every critical component, including the power cylinder, camshaft, turbo and fuel system, has been scru-tinized, modified, upgraded and improved. The ISX platform had only one 15-liter option, the X series offers two: The fuel-friendly X15 Efficiency Series geared toward line-haul and regional markets, and the X15 Performance Series, built specifically for heavy-haul, RV and other … All that makes the X15 a completely reinvented platform that delivers the best performance and dependability in the industry. There was one person though who said that if he did it all over again, he'd pick the efficiency over the performance because of price and fuel economy.
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