Today I’m towing my 8,000 lb enclosed trailer through the Appalachian Mountains with the Chevy 1500’s 3.0L Duramax diesel… and let me tell you, this little engine continues to impress. I ran my full 120-mile towing loop — long grades, rolling climbs, highway sections, and real mountain terrain — the exact same loop I’ve used to test every half-ton engine I review. And surprisingly, the 3.0L Duramax holds its own against (and in some cases beats) the bigger gas engines in the segment. Smooth powe