The oil capacity of the 6.7-liter Cummins turbo diesel engine is approximately 12 quarts, and it is available in three variations as of the company's 2013 model year. As of 2015, the 6.7-liter Cummins engine model is still in production, and it replaced the 5.9-liter model in 2007.
The 6.7-liter Cummins turbo diesel engine has an in-line six-cylinder configuration, and it uses cast iron for both its cylinder head and engine block. The engine also has an oil-to-air compression ration 17.3 to 1 and uses a direct injection system that generates up to 26,000 pounds per square inch of pressure. The 6.7-liter Cummins turbo diesel engine also generates between 350 and 385 horsepower.