{"id":236,"date":"2026-05-23T09:49:22","date_gmt":"2026-05-23T13:49:22","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2024-gmc-sierra-2500-hd-pickup-6-6l-8-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-05-23T09:49:22","modified_gmt":"2026-05-23T13:49:22","slug":"2024-gmc-sierra-2500-hd-pickup-6-6l-8-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2024-gmc-sierra-2500-hd-pickup-6-6l-8-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2024 GMC Sierra 2500 HD 6.6L L5P Diesel Oil & Filter Guide"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

Quick Summary: 2024 GMC Sierra 2500 HD 6.6L L5P Diesel Maintenance<\/h2>\n

For the 2024 GMC Sierra 2500 HD with the 6.6L 8-cylinder L5P Diesel Turbo engine, the oil capacity is 10 quarts<\/strong> (including filter change). The recommended viscosity for temperatures above -18\u00b0C (0\u00b0F) is 15W-40<\/strong>, though 5W-40 is suggested for improved cold starting when ambient temperatures are below 0\u00b0F. AMSOIL recommends using Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil<\/strong> paired with an AMSOIL Oil Filter (EAO17-EA<\/a>)<\/strong> for optimal protection.<\/p>\n

What oil does a 2024 GMC Sierra 2500 HD L5P take?<\/h2>\n

The 2024 GMC Sierra 2500 HD with the 6.6L L5P diesel engine requires an oil viscosity of 15W-40 for temperatures above -18\u00b0C (0\u00b0F). If you are operating in extreme cold where ambient temperatures drop below 0\u00b0F, it is recommended to use a 5W-40 viscosity to facilitate better cold starting. The AMSOIL lookup note specifies an oil specification of CJ-4.<\/p>\n

AMSOIL Product Recommendations<\/h2>\n

The following AMSOIL products are specifically listed for the 2024 GMC Sierra 2500 HD with the 6.6L L5P Diesel engine to assist with routine maintenance and heavy-duty performance.<\/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 15W-40 100% Synthetic Max-Duty Diesel Oil<\/td>\n15W-40<\/a><\/td>\nDMEQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 15W-40 Heavy-Duty 100% Synthetic Diesel Oil<\/td>\n15W-40<\/a><\/td>\nADPQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note: For ambient temperatures below 0\u00b0F (-18\u00b0C), use 5W-40 to improve cold starting.<\/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 & Antifreeze<\/h3>\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<\/table>\n<\/div>\n

Engine Oil Specifications & Capacity<\/h3>\n
\n\n\n\n\n\n\n
Detail<\/th>\nSpecification\/Value<\/th>\n<\/tr>\n
Oil Viscosity (Standard)<\/td>\n15W-40<\/td>\n<\/tr>\n
Oil Viscosity (Cold Start)<\/td>\n5W-40<\/td>\n<\/tr>\n
Oil Specification<\/td>\nCJ-4<\/td>\n<\/tr>\n
Oil Capacity (with filter)<\/td>\n10 quarts<\/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