{"id":608,"date":"2026-06-24T18:53:20","date_gmt":"2026-06-24T22:53:20","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2004-dodge-ram-3500-pickup-5-9l-6-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-06-24T18:53:20","modified_gmt":"2026-06-24T22:53:20","slug":"2004-dodge-ram-3500-pickup-5-9l-6-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2004-dodge-ram-3500-pickup-5-9l-6-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2004 Dodge Ram 3500 5.9L Diesel Oil & Filter Guide: Capacities and Recommendations"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

What oil does a 2004 Dodge Ram 3500 5.9L Diesel take?<\/h2>\n

The 2004 Dodge Ram 3500 with the 5.9L 6-cylinder diesel engine requires an oil viscosity of 15W-40 for temperatures above -18\u00b0C, or a synthetic-based 5W-40 for all temperatures. The total oil capacity is 12 quarts including the filter. For optimal protection, AMSOIL recommends using their Signature Series or Heavy-Duty Synthetic Diesel Oils.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the vehicle specifications, here are the recommended lubrication and filtration products for your Ram Cummins.<\/p>\n

Engine Oil Recommendations<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nViscosity<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series 100% Synthetic Max-Duty Diesel Oil<\/td>\n5W-40<\/a><\/td>\nDEOQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil<\/td>\n5W-40<\/a><\/td>\nADOQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Oil Specification:<\/strong> The AMSOIL lookup note lists Oil Grade CI-4 for this application.<\/p>\n

Oil Filter Recommendations<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Oil Filter<\/td>\nEAO80-EA<\/a><\/td>\n<\/tr>\n
WIX XP Oil Filter<\/td>\n57620XP-EA<\/a><\/td>\n<\/tr>\n
WIX Oil Filter<\/td>\n57620-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Air Filter Recommendations<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
WIX Air Filter (2″ Pleat)<\/td>\n42846-EA<\/a><\/td>\n<\/tr>\n
WIX Air Filter (4″ Pleat)<\/td>\n49946-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Specifications & Details<\/h2>\n

Maintaining the correct oil viscosity and capacity is vital for the longevity of the 5.9L Cummins diesel engine, especially under heavy load.<\/p>\n

Oil Viscosity & Capacity<\/h3>\n
\n\n\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Oil Grade<\/td>\nCI-4<\/td>\n<\/tr>\n
Viscosity (Above -18\u00b0C)<\/td>\n15W-40<\/td>\n<\/tr>\n
Viscosity (All Temps)<\/td>\n5W-40 (Synthetic based)<\/td>\n<\/tr>\n
Oil Capacity<\/td>\n12 quarts (with filter)<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note: Always check the oil level after refilling.<\/em><\/p>\n

Service Torque Specs<\/h3>\n
\n\n\n\n
Component<\/th>\nTorque Value<\/th>\n<\/tr>\n
Oil Drain Plug<\/td>\n37 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Diesel maintenance notes for this vehicle<\/h2>\n

For the 2004 Dodge Ram 3500, maintenance should focus on high-pressure diesel systems and turbocharger protection. Because these vehicles are often used for heavy-duty towing and hauling, keeping the lubrication system clean is critical to prevent soot loading and engine wear.<\/p>\n