{"id":227,"date":"2026-05-22T20:51:32","date_gmt":"2026-05-23T00:51:32","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2015-ram-2500-pickup-6-7l-6-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-05-22T20:51:32","modified_gmt":"2026-05-23T00:51:32","slug":"2015-ram-2500-pickup-6-7l-6-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2015-ram-2500-pickup-6-7l-6-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2015 Ram 2500 6.7L Diesel Oil Guide: Capacity, Viscosity & Filters"},"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 2015 Ram 2500 6.7L Diesel take?<\/h2>\n

For the 2015 Ram 2500 with the 6.7L 6-cylinder diesel engine (Engine Code [L] ETK L), the required oil capacity is 12 quarts<\/strong> with a filter change. Recommended viscosities include 15W-40<\/strong> for temperatures above -18\u00b0C and 5W-40<\/strong> for ambient temperatures below -18\u00b0C. AMSOIL recommends using Signature Series 5W-40 Max-Duty Diesel Oil<\/a> or Heavy-Duty 100% Synthetic Diesel Oil<\/a>.<\/p>\n

AMSOIL product recommendations<\/h2>\n

The following AMSOIL products are specifically listed for the 2015 Ram 2500 6.7L Diesel engine to assist with maintenance and performance.<\/p>\n

Engine Oil Options<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nViscosity<\/th>\nCode<\/th>\n<\/tr>\n
Signature Series Max-Duty Diesel Oil<\/a><\/td>\n5W-40<\/a><\/td>\nDEOQT-EA<\/a><\/td>\n<\/tr>\n
Heavy-Duty 100% Synthetic Diesel Oil<\/a><\/td>\n5W-40<\/a><\/td>\nADOQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Oil Specification Note:<\/strong> The AMSOIL lookup note references API CJ\/CK-4 and Cummins CES 20081 standards. Low ash diesel engine oil is required.<\/p>\n

Oil Filter Options<\/h3>\n
\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
AMSOIL Oil Filter<\/a><\/td>\nEAO80-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Air Filter Options<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
WIX Air Filter<\/a><\/td>\n46930-EA<\/a><\/td>\n<\/tr>\n
Donaldson P-Series Heavy Duty Air Filters<\/td>\nP616743-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<\/a><\/td>\nANTPC1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Propylene Glycol Antifreeze<\/a><\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Proper lubrication is critical for the 6.7L Cummins diesel engine to prevent wear and maintain performance under heavy loads.<\/p>\n

Oil Viscosity & Capacity<\/h3>\n
\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n
Capacity (with filter)<\/td>\n12 quarts<\/td>\n<\/tr>\n
Viscosity (Above -18\u00b0C)<\/td>\n15W-40<\/td>\n<\/tr>\n
Viscosity (Below -18\u00b0C)<\/td>\n5W-40<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Warning:<\/strong> Failure to use SAE 5W-40 synthetic engine oil in ambient temperatures below 0 F (-18 C) could result in severe engine damage.<\/p>\n

Service Specifications<\/h3>\n
\n\n\n\n\n\n
Detail<\/th>\nSpecification\/Value<\/th>\n<\/tr>\n
Oil Drain Plug Torque<\/td>\n37 ft\/lbs<\/td>\n<\/tr>\n
Required Oil Type<\/td>\nLow ash diesel engine oil<\/td>\n<\/tr>\n
Lookup Note Reference<\/td>\nAPI CJ\/CK-4; MS-10902; Cummins CES 20081<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Maintenance Tip:<\/strong> After filling, start the engine and idle for several minutes. Check for leaks. Stop the engine, wait 30 minutes to allow oil to drain back into the pan, then check the level again.<\/p>\n

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