{"id":360,"date":"2026-06-03T23:00:37","date_gmt":"2026-06-04T03:00:37","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2021-chevrolet-tahoe-3-0l-6-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-06-03T23:00:37","modified_gmt":"2026-06-04T03:00:37","slug":"2021-chevrolet-tahoe-3-0l-6-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2021-chevrolet-tahoe-3-0l-6-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2021 Chevrolet Tahoe 3.0L Duramax Diesel Maintenance Guide: Oil & Fluid Specs"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

For the 2021 Chevrolet Tahoe equipped with the 3.0L 6-cylinder LM2 T Diesel Turbo engine, the oil capacity is 7 quarts (including filter replacement). The recommended viscosity for all temperatures is 0W-20. AMSOIL recommends using AMSOIL 0W-20 100% Synthetic Diesel Oil<\/a> (DP020QT-EA<\/a>) paired with a WIX Oil Filter<\/a> (WL10351-EA<\/a>) for optimal protection.<\/p>\n

What oil does a 2021 Chevrolet Tahoe 3.0L Diesel take?<\/h2>\n

The 2021 Chevrolet Tahoe with the 3.0L 6-cylinder LM2 T Diesel Turbo engine requires an oil viscosity of 0W-20 for all temperature ranges. The AMSOIL lookup oil grade is SEOA5. For vehicles originally using GM Dexos2, the lookup note states you may use a GM Dexos D licensed engine oil of the appropriate viscosity grade.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup for the 2021 Chevrolet Tahoe 3.0L Diesel, the following products are recommended to maintain engine and component health.<\/p>\n

Engine Oil & Filter<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL 0W-20 100% Synthetic Diesel Oil<\/td>\nDP020QT-EA<\/a><\/td>\n<\/tr>\n
WIX Oil Filter<\/td>\nWL10351-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant & Transmission Fluids<\/h3>\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<\/table>\n<\/div>\n

Transfer Case & Differential<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series Fuel-Efficient ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n
AMSOIL OE Fuel-Efficient 100% Synthetic ATF<\/td>\nOTLQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL SEVERE GEAR\u00ae 75W-85 Synthetic Gear Lube<\/td>\nSVLPK-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Specifications<\/h3>\n
\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Oil Viscosity<\/td>\n0W-20 (All TEMPS)<\/td>\n<\/tr>\n
AMSOIL Lookup Oil Grade<\/td>\nSEOA5<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Capacity<\/h3>\n
\n\n\n\n
Description<\/th>\nCapacity<\/th>\n<\/tr>\n
Oil Capacity (with filter)<\/td>\n7 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note:<\/strong> After refilling, always check the oil level.<\/p>\n

Engine Oil Service Details<\/h3>\n