The 6.6L Duramax Diesel engine was first introduced in the 2001 model year. It has been produced every year since then at the DMAX Engine Plant in Moraine, Ohio.
Duramax LB7 Oil Change
The Duramax LB7 engine was produced from 2001 to 2004. It had a peak horsepower rating of 235 HP in the 2001 to 2003 model years, along with a peak torque of 500 ft lbs. These number were raised in the 2004 model year to 300 HP and 520 ft lbs of torque.
The Duramax LB7 oil capacity is 10 quarts of oil when you change the oil filter as well.
Duramax LLY Oil Change
The Duramax LLY engine was produced from 2004 to 2006. It had a peak horsepower rating of 310 HP through out its production run. It had 520 ft lbs of torque in the 2004 and 2005 engines. It was raised up to 605 ft lbs for the 2006 model year.
The Duramax LLY oil capacity is 10 quarts of oil when you change the oil filter as well.
Duramax LBZ Oil Change
The Duramax LB7 engine was produced from 2006 to 2007 years only. It had a peak horsepower rating of 360 HP and a peak torque rating of 650 ft lbs during its entire production run.
The Duramax LBZ oil capacity is 10 quarts of oil when you change the oil filter as well.
Duramax LMM Oil Change
The Duramax LMM engine was produced from 2007 to 2010 model years. It had a peak horsepower rating of 365 HP and a peak torque rating of 660 ft lbs during its entire production run.
The Duramax LMM oil capacity is 10 quarts when you change the oil filter as well.
Duramax LML Oil Change
The Duramax LML engine was produced from 2011 to 2016 model years. It had a peak horsepower rating of 397 HP and a peak torque rating of 765 ft lbs during its entire production run.
The Duramax LML oil capacity is 10 quarts of oil when you change the oil filter as well.
Duramax Oil Capacity
The 6.6 Duramax engine oil capacity is 10 quarts across all of the engines model years. That is one of the nice consistent items on this engine along with using the same oil filters since 2001 model year.
The recommended oil viscosity is 5W-40 that is acceptable in all temperature settings, if you are not going to be in an environment that has temperatures below 0 degrees Fahrenheit – then you can use a 15W-40 viscosity oil.
Here are some of the top rated 5W-40 Diesel Engine Oils:
Mobil 1 Turbo Diesel Truck Full Synthetic Motor Oil 5W-40
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil
Schaeffer Manufacturing Co. SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40
Delo 400 XSP SAE 5W-40 Synthetic Motor Oil
Duramax Oil Change Interval
The recommended Duramax oil change interval is 10,000 miles or when the “change engine oil” message is displayed by the oil life monitoring system.
Best Oil Filter for Duramax
The best oil filter for the Duramax engine recommended by GM is the AC Delco PF2232. Read about some other choices in the following article – Best Oil Filter for Duramax Diesel Engines
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