{"id":760,"date":"2026-07-04T17:17:33","date_gmt":"2026-07-04T21:17:33","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1984-mercedes-benz-300cd-3-0l-5-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-07-04T17:17:33","modified_gmt":"2026-07-04T21:17:33","slug":"1984-mercedes-benz-300cd-3-0l-5-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1984-mercedes-benz-300cd-3-0l-5-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"1984 Mercedes Benz 300cd Diesel Maintenance Guide: Oil & Fluid Specifications"},"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 1984 Mercedes Benz 300cd take?<\/h2>\n

The 1984 Mercedes Benz 300cd with the 3.0L 5-cylinder diesel engine requires an oil capacity of 7.9 quarts when replacing the filter. Recommended viscosities include 0W-30 and 0W-40 for all temperatures, 10W-40 for temperatures above -20\u00b0C, and 5W-30, 5W-40, or 5W-50 for temperatures above -25\u00b0C. AMSOIL recommends AMSOIL 5W-40 FS 100% Synthetic European Motor Oil<\/a> or AMSOIL 0W-40 FS 100% Synthetic European Motor Oil<\/a> for this application.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup data, the following products are recommended for your 1984 Mercedes Benz 300cd maintenance needs:<\/p>\n

Engine Oil<\/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
AMSOIL 0W-40 FS 100% Synthetic European Motor Oil<\/td>\nEFOQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant & Antifreeze<\/h3>\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<\/table>\n<\/div>\n

Automatic Transmission Fluid<\/h3>\n
\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
AMSOIL OE Multi-Vehicle 100% Synthetic ATF<\/td>\nOTFQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Brake & Steering Fluids<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid<\/td>\nBFLVCN-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid<\/td>\nPSFCN-EA<\/a><\/href><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Diesel Fuel Additives<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Diesel Injector Clean Fuel Additive<\/td>\nadfpcn-ea<\/a><\/td>\n<\/tr>\n
AMSOIL Diesel Cetane Boost Fuel Additive<\/td>\nacbcn-ea<\/a><\/td>\n<\/tr>\n
AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive<\/td>\nadscn-ea<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Maintaining the correct oil viscosity is critical for the longevity of the OM617 engine. The AMSOIL lookup provides specific guidance based on operating temperatures.<\/p>\n

Oil Viscosity Guide<\/h3>\n
\n\n\n\n\n\n
Temperature Condition<\/th>\nRecommended Viscosity<\/th>\n<\/tr>\n
All Temperatures<\/td>\n0W-30, 0W-40<\/td>\n<\/tr>\n
Above -20\u00b0C<\/td>\n10W-40<\/td>\n<\/tr>\n
Above -25\u00b0C<\/td>\n5W-30, 5W-40, 5W-50<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

AMSOIL lookup oil grade:<\/strong> SEO41<\/p>\n

Oil Capacity and Service Notes<\/h3>\n