{"id":237,"date":"2026-05-23T12:49:29","date_gmt":"2026-05-23T16:49:29","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2024-gmc-sierra-3500-pickup-6-6l-8-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-05-23T12:49:29","modified_gmt":"2026-05-23T16:49:29","slug":"2024-gmc-sierra-3500-pickup-6-6l-8-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2024-gmc-sierra-3500-pickup-6-6l-8-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2024 GMC Sierra 3500 Pickup 6.6L L5P Diesel: Oil & Filter Guide"},"content":{"rendered":"
\n
\n
\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

What oil does a 2024 GMC Sierra 3500 6.6L L5P Diesel take?<\/h2>\n

For the 2024 GMC Sierra 3500 Pickup with the 6.6L 8-cylinder L5P Diesel Turbo engine, the recommended oil viscosity is 15W-40 for ambient temperatures above -18\u00b0C (0\u00b0F). When temperatures drop below 0\u00b0F (-18\u00b0C), use 5W-40 to improve cold starting. The total oil capacity is 10 quarts with a filter change. AMSOIL recommends using Signature Series 15W-40 Max-Duty Diesel Oil<\/a> or Heavy-Duty 15W-40 Synthetic Diesel Oil<\/a>.<\/p>\n

AMSOIL product recommendations<\/h2>\n

The following AMSOIL products are specifically listed for the 2024 GMC Sierra 3500 6.6L L5P Diesel engine and related maintenance components.<\/p>\n

Engine Oil Options<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nViscosity<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series Max-Duty Diesel Oil<\/td>\n15W-40<\/a><\/td>\nDMEQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Heavy-Duty 100% Synthetic Diesel Oil<\/td>\n15W-40<\/a><\/td>\nADPQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note: 5W-40 is recommended for all temperatures or when ambient temperature is below -18\u00b0C.<\/em><\/p>\n

Oil Filter Options<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Oil Filter<\/td>\nEAO17-EA<\/a><\/td>\n<\/tr>\n
WIX XP Oil Filter<\/td>\nWL10255XP-EA<\/a><\/td>\n<\/tr>\n
WIX Oil Filter<\/td>\nWL10255-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant & Transmission Fluids<\/h3>\n
\n\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Passenger Car & Light Truck Antifreeze & Coolant<\/td>\nANTPC1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Propylene Glycol Antifreeze and Engine Coolant<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Signature Series ULV 100% Synthetic ATF<\/td>\nULVPK-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Signature Series Fuel-Efficient 100% Synthetic ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Proper lubrication is critical for the L5P diesel engine to manage high-torque demands and soot loading. Always verify your specific requirements against the owner’s manual.<\/p>\n

Oil Viscosity & Capacity<\/h3>\n
\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification\/Value<\/th>\n<\/tr>\n
Oil Viscosity (Above -18\u00b0C)<\/td>\n15W-40<\/td>\n<\/tr>\n
Oil Viscosity (All Temps)<\/td>\n5W-40<\/td>\n<\/tr>\n
Oil Capacity (with filter)<\/td>\n10 quarts<\/td>\n<\/tr>\n
Oil Specification (CJ-4)<\/td>\nConfirmed from source data<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Drain Plug Torque<\/h3>\n
\n\n\n\n
Component<\/th>\nTorque Value<\/th>\n<\/tr>\n
Oil Drain Plug<\/td>\n18 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note: Always replace the drain plug seal when performing an oil change.<\/em><\/p>\n

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