Sheepdog78ExplorerApr 09, 2019Duramax L5P Fuel MileageAnyone have any real world experience with the fuel economy of the new GM L5P Duramax in a 3500 DRW?
_1FlyboyExplorer IIApr 10, 2019... You might also try posting on Duramaxforum.com for good answers...
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