Drivers of vehicles with 6.4-liter HEMI engines should use 0W-40, which is thicker at your engine's regular operating temperature. If you're using a synthetic blend, which is a mixture of ...
The Ram 2500 is equipped as standard with a 6.4-liter HEMI V8 engine generating 410 hp and 429 lb-ft of torque, which is a lot of horsepower compared to the 370 hp you get with the diesel engine.