{"id":936,"date":"2026-07-12T09:28:34","date_gmt":"2026-07-12T13:28:34","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2021-ram-1500-pickup-3-0l-6-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-07-12T09:28:34","modified_gmt":"2026-07-12T13:28:34","slug":"2021-ram-1500-pickup-3-0l-6-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2021-ram-1500-pickup-3-0l-6-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2021 Ram 1500 3.0L Diesel Turbo 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

AMSOIL product recommendations<\/h2>\n

Based on the vehicle specifications, AMSOIL provides the following high-performance lubrication and filtration options:<\/p>\n

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

Air Filtration<\/h3>\n
\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
WIX Air Filter<\/td>\n42725-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 Fluid<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nCode<\/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<\/table>\n<\/div>\n

Transfer Case Lubricant<\/h3>\n
\n\n\n\n
Product Name<\/th>\nCode<\/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 a 2021 Ram 1500 3.0L Diesel take?<\/h2>\n

For the 2021 Ram 1500 with the 3.0L 6-cylinder Engine Code [M] Diesel Turbo, the required oil viscosity is 5W-40<\/strong>. The engine oil capacity is 8.5 quarts<\/strong> (including the filter). AMSOIL recommends using AMSOIL 5W-40 FS 100% Synthetic European Motor Oil<\/a> (Code: EFMQT-EA<\/a>) for this application.<\/p>\n

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

Proper lubrication is critical for the 3.0L Diesel Turbo engine to ensure longevity and performance.<\/p>\n

What oil viscosity does this diesel engine require?<\/h3>\n

The AMSOIL lookup specifies an oil viscosity of 5W-40 for all temperatures. The oil grade is listed as SEO50.<\/p>\n

\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Viscosity<\/td>\n5W-40 (All TEMPS)<\/td>\n<\/tr>\n
Oil Grade<\/td>\nSEO50<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

How much oil does it take with a filter change?<\/h3>\n

The total capacity for the engine is 8.5 quarts when replacing the filter. Always check the oil level after refilling.<\/p>\n

\n\n\n\n
Component<\/th>\nCapacity<\/th>\n<\/tr>\n
Engine Oil (with filter)<\/td>\n8.5 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

What are the engine oil requirements?<\/h3>\n

The AMSOIL lookup note states that use of a full synthetic motor oil meeting MS-12991 and the API SN engine oil category is required.<\/p>\n

\n\n\n\n\n
Requirement Type<\/th>\nSpecification<\/th>\n<\/tr>\n
OEM Specification Reference<\/td>\nMS-12991<\/td>\n<\/tr>\n
API Category<\/td>\nSN<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Oil Drain Plug Torque<\/h3>\n

When performing an oil change, ensure the drain plug is tightened to the correct specification to prevent leaks or damage.<\/p>\n

\n\n\n\n
Component<\/th>\nTorque Value<\/th>\n<\/tr>\n
Oil Drain Plug<\/td>\n30 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Transmission & Transfer Case Specifications<\/h2>\n

This vehicle utilizes the 8HP75 automatic transmission. Proper fluid maintenance is essential for smooth shifting and heat management.<\/p>\n

Automatic Transmission Fluid (ATF) Details<\/h3>\n

For the 8-speed 8HP75 transmission, the total fill capacity is 9 quarts.<\/p>\n

\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Transmission Model<\/td>\n8HP75 (SL076)<\/td>\n<\/tr>\n
Total Fill Capacity<\/td>\n9 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Transfer Case Lubricant<\/h3>\n

For the BW 48-11 transfer case, specific fill and torque procedures must be followed.<\/p>\n

\n\n\n\n\n\n
Component<\/th>\nSpecification<\/th>\n<\/tr>\n
Capacity (BW 48-11)<\/td>\n3.6 pints<\/td>\n<\/tr>\n
Fill Plug Torque<\/td>\n18 ft\/lbs<\/td>\n<\/tr>\n
Drain Plug Torque<\/td>\n18 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Cooling System Specifications<\/h2>\n

Maintaining correct coolant levels and chemistry is vital for protecting engine metals and gaskets.<\/p>\n

\n\n\n\n
Component<\/th>\nCapacity<\/th>\n<\/tr>\n
Coolant Capacity<\/td>\n11.6 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

The AMSOIL lookup lists two options: a 50\/50 pre-mix (ANTPC1G-EA<\/a>) and a concentrated version that requires mixing with distilled or high-quality water (ANT1G-EA<\/a>).<\/p>\n

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