What kind of fuel economy does a Duramax get?
Towing conditions were 60 mph, predominantly flat highway. Trucks equipped with either the Duramax 6600 or 6.5L turbodiesels can tow twice that weight at 65-70 mph while producing fuel economy in the 10-13 mpg range. Both Duramax and 6.5L TD fuel economy while running empty could range from 15-20 mpg depending on gearing and driving habits.
How many versions of the Duramax diesel engine are there?
All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. Each version of the engine has its own issues and quirks, and some are less problematic than others.
How much horsepower does a Duramax LML have?
The LML Duramax took a big performance leap to nearly 400hp and to 765lb-ft. of torque. To accommodate for the power increases, Duramax strengthened the block, pistons, rods, main bearing, and a higher flowing fuel pump.
What causes a Duramax diesel engine to heat up?
When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp.
What kind of mpg does a Duramax truck get?
Average MPG for Stock Duramax Trucks The average MPG for a truck with a Duramax engine varies depending on the truck model as well as on which Duramax engine it has. For example, the 2020 Chevy Silverado 1500 with the 3.0-liter Duramax turbo-diesel gets an EPA-estimated 33 MPG on the highway and 23 MPG in the city.
All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. Each version of the engine has its own issues and quirks, and some are less problematic than others.
How can I get better fuel economy on my Duramax truck?
Gaining fuel economy on your Duramax truck can be done through proactive maintenance, driving habits, and modifications. Some modifications, like the airbox mod listed above, cost next to nothing and are simple to perform. Other modifications can get expensive quickly.
When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp.