{"id":624,"date":"2026-06-25T18:00:35","date_gmt":"2026-06-25T22:00:35","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2023-chevrolet-tahoe-3-0l-6-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-06-25T18:00:35","modified_gmt":"2026-06-25T22:00:35","slug":"2023-chevrolet-tahoe-3-0l-6-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2023-chevrolet-tahoe-3-0l-6-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2023 Chevrolet Tahoe 3.0L Duramax Diesel Maintenance Guide | Oil & Filter Specs"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

For the 2023 Chevrolet Tahoe equipped with the 3.0L 6-cylinder LM2 T Diesel Turbo engine, the oil capacity is 7 quarts (with filter). 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 2023 Chevrolet Tahoe 3.0L Diesel take?<\/h2>\n

The 2023 Chevrolet Tahoe with the 3.0L 6-cylinder LM2 T Diesel Turbo engine requires an oil viscosity of 0W-20 for all temperatures. The AMSOIL lookup oil grade is SEOA5. For vehicles originally using GM Dexos2, the lookup note states that a GM Dexos D licensed engine oil of the appropriate viscosity grade may be used.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup data, the following products are recommended for your 2023 Chevrolet Tahoe 3.0L Diesel engine maintenance.<\/p>\n

Engine Oil & Filter<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nCode<\/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 & Antifreeze<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nCode<\/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

Transmission & Transfer Case<\/h3>\n
\n\n\n\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
AMSOIL Signature Series ULV 100% Synthetic ATF<\/td>\nULVPK-EA<\/a><\/td>\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 Signature Series Fuel-Efficient ATF (Transfer Case)<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Specifications<\/h3>\n
\n\n\n\n
Viscosity<\/th>\nOil Grade (AMSOIL Lookup)<\/th>\n<\/tr>\n
0W-20<\/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
With Filter Change<\/td>\n7 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Oil Drain Plug Torque Specs<\/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.<\/em><\/p>\n

How much transmission fluid does it take?<\/h2>\n

Transmission capacity varies based on your specific cooling setup for the 10-speed transmission (10L80\/MQC or 10L80\/MHS). For both configurations, the total fill with an external cooler is approximately 11.5 quarts, while a system with a standard cooler requires 12 quarts. The initial fill capacity is listed at 8.1 quarts.<\/p>\n

Automatic Transmission Capacity<\/h3>\n
\n\n\n\n\n\n
Configuration<\/th>\nTotal Fill Capacity<\/th>\n<\/tr>\n
10-speed with O Cooler (MQC\/MHS)<\/td>\n11.5 quarts<\/td>\n<\/tr>\n
10-speed with Cooler (MQC\/MHS)<\/td>\n12 quarts<\/td>\n<\/tr>\n
Initial Fill<\/td>\n8.1 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

The AMSOIL lookup note references the WSS-M2C949-A specification, which was developed by Ford and GM; products meeting this are available under DEXRON ULV and MERCON ULV tradenames.<\/p>\n

Transfer Case Maintenance<\/h2>\n

For transfer case models MP3015 or 25 (AF6), the capacity is 3.2 pints. You should check the tag on the case for identification. When servicing, apply high-performance thread sealant to the threads of both the drain and fill plugs before installation.<\/p>\n

\n\n\n\n\n
Component<\/th>\nTorque Spec<\/th>\n<\/tr>\n
Transfer Case Drain Plug<\/td>\n15 ft\/lbs<\/td>\n<\/tr>\n
Transfer Case Fill Plug<\/td>\n15 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant Specifications and Capacities<\/h2>\n

The cooling system requires attention to both the engine and the charge air cooling system. The engine capacity is 15.5 quarts, while the Charge Air Cooling System requires 6.1 quarts.<\/p>\n

\n\n\n\n\n
System<\/th>\nCapacity<\/th>\n<\/tr>\n
Engine<\/td>\n15.5 quarts<\/td>\n<\/tr>\n
Charge Air Cooling System<\/td>\n6.1 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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