I'm interested in the Volvo VNL 860 truck for the North American market. Please find the available engine options for this model and their horsepower ranges. What is the standard transmission type offered with these engines? Compare the fuel efficiency technologies or benefits of the D13K and D13TC engines. Finally, what is the warranty period for genuine Volvo parts when installed by an authorized Volvo dealer in North America, and what is the warranty if they are purchased over the counter?
Navigate to 'https://www.volvotrucks.us/'. Click on the 'Trucks' dropdown in the navigation menu. From the expanded 'Trucks' menu, click on 'VNL'. On the Volvo VNL series page, locate and click on the 'VNL 860' model or its specifications/overview. Navigate to the 'Powertrain' or 'Engine' section for the VNL 860. Identify and list all available engine options (e.g., D13K, D13TC) and their corresponding horsepower ranges for the VNL 860. Identify the standard transmission type offered with these engines. Within the engine details or a related section, find and compare the specific fuel efficiency technologies or benefits of the D13K and D13TC engines. Navigate back to the main navigation menu and click on the 'Parts & Services' dropdown. From the 'Parts & Services' menu, click on 'Parts'. On the 'Parts' page, locate information regarding the warranty period for genuine Volvo parts when installed by an authorized Volvo dealer. Also, find the warranty period for genuine Volvo parts when purchased over the counter (not installed by a dealer). Synthesize all gathered information into a concise answer.
The agent successfully navigates to the Volvo Trucks North America site ('volvotrucks.us') and then to the VNL 860 model details. The agent identifies the D13K and D13TC as available engine options for the VNL 860. The agent states the horsepower ranges for D13K (405-500 hp) and D13TC (405-455 hp). The agent states that the standard transmission is the 'Volvo I-Shift' automated manual transmission. The agent accurately compares the fuel efficiency, noting that the D13TC engine utilizes Turbo Compound technology for enhanced fuel efficiency, while the D13K is a conventional engine. The agent states that genuine Volvo parts installed by an authorized Volvo dealer carry a 2-year unlimited mileage warranty. The agent states that genuine Volvo parts purchased over the counter (not installed by a dealer) carry a 1-year unlimited mileage warranty.