Another hyper efficient pickup truck turbo diesel enters the fray! Wayne Gerdes – CleanMPG – July 25, 2019 2020 Chevrolet Silverado The all-new 3.0L Duramax I6 Turbo Diesel can be found inside. The Duramax nameplate has proven itself to be one of the most durable turbo diesel offerings ever to be introduced in a GM or any other pickup. Key to maintaining the brands durable image, advanced material selection and engineering was pushed to its limit. The Duramax team have taken all they know and expanded upon it with the very latest design. Meet GM's latest super diesel. The 2020 Chevrolet Silverado 1500 4X2 when equipped with the all-new 277 hp and 460 lb-ft of torque, 3.0L I6 turbo-diesel, provides owners with a record setting 23/33 mpg city/highway rating! 4WD reduces that number to 23/29 mpg city/highway. Taking a page out of Cummins playbook, GM transitioned to an I6 block eliminating not only more complex construction but an entire cam shaft and all the efficiency robbing ancillary hardware associated with it. The all-new 3.0L Duramax begins with iron cylinder liners within an aluminum block, forged steel crankshaft and connecting rods and blended silicon/aluminum pistons for greater heat resistance and reduced expansion. It also features an all-new active thermal management system which warms up key moving components far faster. A driver-selectable stop/start shuts off the engine at stoplights and certain other stop-and-go situations and automatically restarts when the driver takes his or her foot off the brake. The 3.0L I6 turbo diesel is paired with GMs famed Hydra-Matic 10L80 10-speed AT with an overall larger ratio spread to reduce highway RPMs and provide high power launches with less engine strain. The 3.0L Duramax turbo-diesel is available on the LT, RST, LTZ and High Country trims. For the LTZ and High Country, the 3.0L Diesel is a $2,495 option. For the LT and RST, it is a $3,890 increase over a 2.7L Turbo I4. The all-new 3.0L Duramax Turbo-Diesel engine Impressive specs indeed! For more on the all-new 2019/2020 Silverado, consider the following: GM’s All-new 2.7L I4 Turbo Slated for the 2019 Silverado! Chevrolet Formally Introduces the All-new 2019 Chevrolet Silverado 2019 Chevrolet Silverado Reveal While we have found EPA figures nothing more than numbers on a page, the biggest question regarding the all-new Super Duramax is will it beat the upcoming 2020 RAM 1500 with its own updated 3rd gen Super EcoDiesel?