How much gas and oil does my 2004 Duramax 6.6L Long bed Silverado have?

I bought this truck used and I just realized the oweners manual is not for the diesel. I’m going to do an oil change and there is no Duramax 6.6L in the specs. It also says a long bed should have 36 gallons, but I’m running out around 27.

Thanks

Tags: 2004, 6.6L, Duramax, long, much, Silverado

One Response to “How much gas and oil does my 2004 Duramax 6.6L Long bed Silverado have?”

1. grandnational_man says:

   October 9, 2011 at 2:03 am

   The Duramax 6. 6L hold 10 quarts of engine oil.
   The fuel tank could hold anywhere from 20 to 35 gallons of fuel.
   If you bring the V. I. N. into a dealer they can decode it and tell you what size tank you have.