K & N filter change
I purchased a 2013 GMC 3500 with a duramax diesel engine.....I filled it up, took it on a road trip down the interstate 65 miles to the next town then turned around came back and refilled it. 17.3 mp...
Forum Discussion
720Deere wrote:
A diesel cannot draw the maximum volume of air at all times. The volume of air (CFM) being drawn by a diesel engine at any given time will be limited by the rpm it is operating at and everybody knows that a diesel typically operates at much lower rpm than a gas engine. A 366ci diesel engine capable of a maximum cfm of 650 at maximum rpm is not able to draw 650 cfm at half the rpm. Unthrottled or not, a diesel cannot defy the principles of volumetric efficiency.
Ye gods...once more, from the top: a diesel operates at HIGHER VE than a gas engine, because even idling, it fills the cylinders completely! An idling gasser might only be running at 5-10% VE.
And, of course, a diesel can EASILY top 100% VE, since they are turbocharged.
