The words contained in this file might help you see if this file matches what you are looking for:

...Cummins engine driver tips epa heavy duty and midrange engines items will notice sounds the electric actuated variable geometry turbocharger causes sound to vary at different times this is normal a slight turbo whistle may also be observed idle conditions compression brakes are quieter on with exhaust aftertreatment after prolonged you momentary white vapor an odor when high system temperature lamp illuminated if excessive have inspected for leaks your earliest convenience optimizing fuel economy shifting techniques maximize time in top gear by using progressive or making each upshift lowest possible rpm skip skipping gears only needed move load note some transmissions not allow hills lug back before shift steep grade climbs oil use ultra low sulfur diesel ulsd cj ash recommended ci permitted read owners manual specific details hest illuminates indicate that temperatures exist due regeneration ensure pipe outlet directed any surface material melt burn explode reference complete instruc...