{"id":255,"date":"2026-05-24T11:24:22","date_gmt":"2026-05-24T15:24:22","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2014-chevrolet-express-2500-6-6l-8-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-05-24T11:24:22","modified_gmt":"2026-05-24T15:24:22","slug":"2014-chevrolet-express-2500-6-6l-8-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2014-chevrolet-express-2500-6-6l-8-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2014 Chevrolet Express 2500 6.6L 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 2014 Chevrolet Express 2500 6.6L Diesel take?<\/h2>\n

For the 2014 Chevrolet Express 2500 with the 6.6L 8-cylinder LGH M Diesel Turbo engine, the recommended oil viscosity is SAE 15W-40 for temperatures above -18\u00b0C (0\u00b0F). For ambient temperatures below -18\u00b0C, use 5W-40 to improve cold starting. The engine oil capacity is 10 quarts with a filter change. AMSOIL recommends Signature Series 15W-40 Max-Duty Diesel Oil<\/a> and the AMSOIL Oil Filter (EAO52-EA)<\/a>.<\/p>\n

AMSOIL product recommendations<\/h2>\n

The following AMSOIL products are specifically listed for the 2014 Chevrolet Express 2500 6.6L Diesel 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 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 and Engine Coolant<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Signature Series Fuel-Efficient Synthetic ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n
AMSOIL OE Fuel-Efficient Synthetic ATF<\/td>\nOTLQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Proper lubrication is critical for the Duramax diesel engine to manage high pressures and heat. Below are the confirmed technical details for this application.<\/p>\n

Oil Viscosity & Capacity<\/h3>\n
\n\n\n\n\n\n
Parameter<\/th>\nSpecification\/Value<\/th>\n<\/tr>\n
Oil Viscosity (Above -18\u00b0C)<\/td>\nSAE 15W-40 (Preferred)<\/td>\n<\/tr>\n
Oil Viscosity (Cold Start)<\/td>\n5W-40 (Below 0 F \/ -18 C)<\/td>\n<\/tr>\n
Oil Capacity (with filter)<\/td>\n10 Quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Installation 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:<\/strong> The AMSOIL lookup note specifies an oil grade of CJ-4 for this engine.<\/p>\n

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