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GM exploring ways to raise half-ton Duramax diesel tow rating

Lots of truck owners cheered when GM announced fuel economy numbers for the 2020 Chevrolet Silverado with the 3.0-liter Duramax diesel inline-six. Even after Ram let loose its EPA mileage ratings for the 2020 Ram 1500 EcoDiesel, the Chevy oil-burner still took the trophy. The victory was years in the making, GM engineers spending an entire four-year development cycle refining the LM2 Duramax to increase mileage. The tradeoff, as well all know by now, is towing; the Duramax in half-ton duty pulls a maximum 9,300 pounds in the Silverado. Rivals across town can do more, the Ford F-150 PowerStroke rated at 11,500, the Ram 1500 EcoDiesel game to pull 12,560. GM engineer John Barta told Muscle Cars & Trucks that more hauling chops could be on the way, explaining, "We’re actually looking at upgrading some of the materials around (the engine bay) to see if we can maybe raise our tow rating." Engine bay materials are at issue due to thermal complexities underhood. John Barta, GM's assistant chief engineer of diesel engine controls, said the Duramax's inline-six configuration allowed engineers to get emissions hardware like the combined selective catalytic reduction, diesel oxidation catalysts, and diesel particulate filter unit closer to the engine, where it heats up quicker, getting emissions down quicker. But that filter puts another heat source in those confines, enforcing a cap on the tow rating to keep the engine and other systems from overheating. "If you look under the hood," he said, "youÂ’ll see a significant amount of silver ‘moon tapeÂ’ around to make sure things arenÂ’t getting overheatedÂ… if we were to go up in higher towing, which we can, we start impacting the possibility of deteriorating some of the components.” There isn't much space for more grille, so swapping for a better grade of "moon tape" or a different kind of material could reduce engine bay heat, extracting a higher tow rating in the process.  It's important to note a point Barta's been making for months about the Duramax figures, though. "Even though itÂ’s nice to brag about big numbers, in reality, light duty customers are not towing that large with their trucks," and, "We do know that (95 percent) of our light duty customers donÂ’t tow over 9,000 pounds." On our First Drive of the 2020 Silverado diesel we called out the tow rating, but emphasized that the Chevy and GMC have more important challenges to overcome.

Bentley Continental GT V8 and Toyota 4Runner | Autoblog Podcast #604

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Consumer Editor Jeremy Korzeniewski and Senior Editor, Green, John Beltz Snyder. First, they talk about driving the 2020 Bentley Continental GT V8 First Edition, followed by the 2020 Toyota 4Runner TRD Off-Road. Then they revive a format called "This or That," discussing the Jeep Wrangler vs. Gladiator, Subaru Forester vs. Outback, Mustang vs. Camaro vs. Challenger, and whether they'd rather spend $25,000 on a new or vintage car. They've got an update on a previous Spend My Money segment, and, finally, they help another listener pick a daily driver. Autoblog Podcast #604 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2020 Bentley Continental GT V8 2020 Toyota 4Runner This or That: Jeep Gladiator or Jeep Wrangler Subaru Forester or Subaru Outback Ford Mustang, Chevy Camaro or Dodge Challenger Vintage car or new car Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Podcasts Bentley Chevrolet Dodge Jeep Subaru Toyota Truck Coupe SUV Luxury Off-Road Vehicles Performance Classics

Sabine Schmitz to compete in WTCC race at Nurburgring, hopes for rain

The World Touring Car Championship is set to return to the Nurburgring this year after a 30-year absence. Who better, then, to lead the pack than Sabine Schmitz? One of the most skilled drivers around the Norschleife, 45-year-old Schmitz has been known to compete in the VLN series and in the 24-hour race at the Nurburgring (which she's won twice), and regularly drives tourists on hot laps around the Green Hell. Nobody can drive the circuit better than Schmitz when the rain starts to fall, and fall it often does in the German spring, but she'll have a new challenge on her hands when she makes her WTCC debut in a Chevy Cruze for the Munnich Motorsport team for the German round next month. It'll be interesting to see how Sabine does in the race, given that she has no experience with the vehicle she'll be driving, but has immense knowledge of the notoriously difficult track. She'll have the chance to acclimate a little during the WTCC test session at the 'Ring later this month, and hopes to compete in one of the two races – in Morocco or Hungary – before tackling her home track in unfamiliar machinery. News Source: WTCC via YouTube, BridgeToGantry.comImage Credit: Newspress Celebrities Hirings/Firings/Layoffs Motorsports Chevrolet wtcc