{"id":210,"date":"2026-05-21T03:06:25","date_gmt":"2026-05-21T07:06:25","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2015-chevrolet-express-3500-6-6l-8-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-05-21T03:06:25","modified_gmt":"2026-05-21T07:06:25","slug":"2015-chevrolet-express-3500-6-6l-8-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2015-chevrolet-express-3500-6-6l-8-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2015 Chevrolet Express 3500 6.6L Duramax 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

What oil does a 2015 Chevrolet Express 3500 6.6L Duramax take?<\/h2>\n

For the 2015 Chevrolet Express 3500 with the 6.6L 8-cylinder LGH P Diesel Turbo engine, the preferred viscosity is SAE 15W-40 for temperatures above -18\u00b0C. For ambient temperatures below 0\u00b0F (-18\u00b0C), use 5W-40 to improve cold starting. The 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 2015 Chevrolet Express 3500 6.6L LGH P Diesel Turbo engine and related systems.<\/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

Oil Specification:<\/strong> CJ-4<\/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>\nEAO52-EA<\/a><\/td>\n<\/tr>\n
WIX XP Oil Filter<\/td>\n57202XP-EA<\/a><\/td>\n<\/tr>\n
WIX Oil Filter<\/td>\n57202-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\/Coolant<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Signature Series Fuel-Efficient ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n
AMSOIL OE Fuel-Efficient ATF<\/td>\nOTLQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Proper lubrication is vital for the 6.6L Duramax diesel engine to manage high compression and thermal loads.<\/p>\n

Oil Viscosity & Capacity<\/h3>\n
\n\n\n\n\n\n\n
Requirement<\/th>\nDetail<\/th>\n<\/tr>\n
Preferred Viscosity<\/td>\nSAE 15W-40 (Above -18\u00b0C)<\/td>\n<\/tr>\n
Cold Weather Viscosity<\/td>\n5W-40 (Below 0 F \/ -18 C)<\/td>\n<\/tr>\n
Oil Capacity<\/td>\n10 quarts (with filter change)<\/td>\n<\/tr>\n
Drain Plug Torque<\/td>\n18 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Air & Fuel Filters<\/h3>\n

Air Filter:<\/strong> No recommendations available from source data.<\/p>\n

Oil Vapor Filter:<\/strong> No recommendations available from source data.<\/p>\n

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