{"id":278,"date":"2026-05-26T01:48:56","date_gmt":"2026-05-26T05:48:56","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2021-jeep-gladiator-3-0l-6-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-05-26T01:48:56","modified_gmt":"2026-05-26T05:48:56","slug":"2021-jeep-gladiator-3-0l-6-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2021-jeep-gladiator-3-0l-6-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2021 Jeep Gladiator 3.0L Diesel Oil & Maintenance Guide"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

AMSOIL Product Recommendations<\/h2>\n

To simplify your maintenance, AMSOIL provides high-performance synthetic fluids and filters specifically selected for the 3.0L diesel engine requirements.<\/p>\n

Engine Oil & Filter<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL 5W-40 FS 100% Synthetic European Motor Oil<\/td>\nEFMQT-EA<\/a><\/td>\n<\/tr>\n
WIX Oil Filter<\/td>\nWL10614-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Automatic Transmission Fluid (ATF)<\/h3>\n
\n\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series Fuel-Efficient 100% Synthetic 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 Multi-Vehicle 100% Synthetic ATF<\/td>\nATFPK-EA<\/a><\/td>\n<\/tr>\n
AMSOIL OE Multi-Vehicle 100% Synthetic ATF<\/td>\nOTFQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant & Brake Fluid<\/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\/Coolant<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid<\/td>\nBFLVCN-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Transfer Case Lubricant<\/h3>\n
\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series Multi-Vehicle 100% Synthetic ATF<\/td>\nATFPK-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Quick Answer: What oil does the 2021 Jeep Gladiator 3.0L Diesel take?<\/h2>\n

The 2021 Jeep Gladiator with the 3.0L 6-cylinder diesel engine (Engine Code [M] EXJ M) requires a total capacity of 9 quarts<\/strong> of oil when changing with a filter. The recommended viscosity is 5W-40<\/strong>. AMSOIL recommends using AMSOIL 5W-40 FS 100% Synthetic European Motor Oil<\/a> (Code: EFMQT-EA<\/a>) paired with a WIX Oil Filter<\/a> (Code: WL10614-EA<\/a>).<\/p>\n

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

Proper lubrication is critical for the longevity of the 3.0L diesel turbo engine. Below are the confirmed technical specifications for your oil service.<\/p>\n

Oil Viscosity and Capacity<\/h3>\n
\n\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Viscosity<\/td>\n5W-40 (All TEMPS)<\/td>\n<\/tr>\n
Capacity (with filter)<\/td>\n9 quarts<\/td>\n<\/tr>\n
AMSOIL Lookup Oil Grade<\/td>\nSEO50<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Service Torque Specifications<\/h3>\n
\n\n\n\n
Component<\/th>\nTorque Value<\/th>\n<\/tr>\n
Oil Drain Plug<\/td>\n33 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Transmission & Drivetrain Specifications<\/h2>\n

Automatic Transmission Details<\/h3>\n

For vehicles equipped with the 8HP75 transmission:<\/p>\n

\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Transmission Model<\/td>\n8 speed 8HP75<\/td>\n<\/tr>\n
Total Fill Capacity<\/td>\n9.5 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Transfer Case Details<\/h3>\n

For Transfer Case MP3022C (AP4):<\/p>\n

\n\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Capacity<\/td>\n3.8 pints<\/td>\n<\/tr>\n
Fill Plug Torque<\/td>\n21 ft\/lbs<\/td>\n<\/tr>\n
Drain Plug Torque<\/td>\n21 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note: Fill transfer case to the bottom edge of the fill plug opening.<\/em><\/p>\n

Cooling System Specifications<\/h2>\n
\n\n\n\n
Component<\/th>\nCapacity<\/th>\n<\/tr>\n
Engine Coolant<\/td>\n12 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Maintaining a modern turbo-diesel engine like the 3.0L in your Jeep Gladiator requires specific attention to detail:<\/p>\n