article thumbnail

GM: new Sierra 5.3L V-8 EcoTec3 highway fuel economy tops Ford EcoBoost V-6

Green Car Congress

In addition to highway fuel economy estimates that are 2 mpg higher than a 2013 Ford V8 pickup equipped with a 5.0L 2WD Pickup truck fuel economy comparisons. In addition to highway fuel economy estimates that are 2 mpg higher than a 2013 Ford V8 pickup equipped with a 5.0L Fuel economy.

Sierra 262
article thumbnail

Oak Ridge-GM prototype low-viscosity ionic liquid-additized engine oil delivers 2% fuel economy improvement over 5W-30

Green Car Congress

Prototype low-viscosity ionic liquid-additized engine oil demonstrated a 2% improved fuel economy compared to Mobil 1 5W-30 engine oil (3.93% over the 20W-30 baseline oil) in standard fuel efficiency engine dynamometer tests. Fuel Efficiency Lubricating Oils' Jun Qu, Huimin Luo, Miaofang Chi, Cheng Ma, Peter J.

article thumbnail

GM uses lightweight, advanced materials to reduce weight on 2015 Colorado pickup

Green Car Congress

Mass comparison, 4x4 crew cabs. The 2015 Chevrolet Colorado uses engineering techniques and lightweight materials to create fuel-efficient pickup capability in a mass-efficient mid-size package. Chevrolet expects EPA fuel economy estimates for Colorado this summer. Based on current GM testing, the standard 2.5L

Colorado 262
article thumbnail

New GM/Tula DSF cylinder deactivation technology could boost fuel efficiency in engines by up to 15%

Green Car Congress

Comparison of DSF fuel economy gains and costs with competing technologies, from Tula’s 2013 SAE paper. In 2012, GM Ventures made an equity investment in Tula; in 2013, Tula engineers presented a paper on their technology at the 2013 SAE World Congress. Wilcutts et al. Click to enlarge.

GM 150
article thumbnail

Former CEO of GM China Group Phil Murtaugh joins Pinnacle Engines board; first engines launch in Asia this year

Green Car Congress

Murtaugh spent 33 years in General Motors, culminating in his position as Chairman and CEO of GM China Group from 2000 - 2005. Recent testing by FEV has verified that the innovative, patented ultra-efficient Pinnacle Engine design provides 30-50% fuel economy.

Asia 220
article thumbnail

GM to Introduce HFO-1234yf AC Refrigerant in 2013 US Models

Green Car Congress

By comparison, the new refrigerant lingers in the atmosphere for 11 days and has a GWP of only 4. The US Environmental Protection Agency awards regulatory credit for the improved environmental performance of the new refrigerant, which helps GM meet the overall requirements of the EPA’s new motor vehicle greenhouse gas regulations.

GM 170
article thumbnail

455 hp 2014 Corvette Stingray to deliver EPA-estimated 29 mpg highway

Green Car Congress

The estimate reflects an average of fuel economy in both the default “Tour” mode, which delivers 28 mpg highway, and driver-selectable “Eco” mode, which delivers 30 mpg highway. Fuel economy estimates for Corvette Stingrays equipped with the six-speed automatic will be finalized soon.

MPG 239