Doc's Diesel THE 5W40 Full Synthetic Heavy Duty Diesel Oil Powered by Hot Shot's Secret, THE 5W-40 FULLSYNTHETIC HEAVY DUTY DIESEL ENGINE OIL is a CK-4 specificationadditive package built with synthetic group III base oils, and containsthe patented FR3 Nano Technology to provide the absolute best levelof protection to your diesel engine. The FR3 Nano Technology infusionprovides protection, longevity, and performance gains that othersynthetic oils will not allow. INCREASED EFFICIENCY The blended friction reducing agents providean unmatched level of technology that enhances performance, increasesfuel economy and is proven to provide up to 78% less oil consumptionthan the specification during the CAT 1N test. SUPERIOR PROTECTION Protects down to the nano level and resists shearing under the most extreme temperatures. The included additive package has proven to reduce wear up to 71% in Cummins ISM severe service test. Oil Capacity: 6.7L Cummins - 3.012 Gallons (12 Quarts)6.7L Powerstroke 3.25 Gallons (13 Quarts)6.6L Duramax - 2.5 Gallons (10 Quarts) (Coming Soon) 3.0L Duramax - 1.75 Gallons (7 Quarts)(Coming Soon) EcoDiesel - 2.65 Gallons (10.6 Quarts)