Here are some highlights of each one. What is a 5.9-liter Cummins diesel engine? Well, for hardcore enthusiasts, it's arguably one of the most popular oil-burners ever produced. Cummins engines ...

The 5.9-liter lasted until 2007, when Cummins launched their larger 6.7-liter engine, kicking off the next ... Cummins was going through a lot of oil and some troubleshooting led him to the ...