{"id":272,"date":"2026-05-25T13:43:39","date_gmt":"2026-05-25T17:43:39","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1981-mercedes-benz-300d-3-0l-5-cyl-diesel-maintenance-guide\/"},"modified":"2026-05-25T13:43:39","modified_gmt":"2026-05-25T17:43:39","slug":"1981-mercedes-benz-300d-3-0l-5-cyl-diesel-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1981-mercedes-benz-300d-3-0l-5-cyl-diesel-maintenance-guide\/","title":{"rendered":"1981 Mercedes Benz 300D (3.0L 5-Cyl Engine Code 616.912 B 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

What oil does a 1981 Mercedes Benz 300D take?<\/h2>\n

For the 1981 Mercedes Benz 300D with the 3.0L 5-cylinder engine (Code 616.912 B Diesel), the recommended oil capacity is 6.9 quarts with a filter change. Recommended viscosities include 0W-30 or 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 5W-40 FS 100% Synthetic European Motor Oil<\/a>.<\/p>\n

AMSOIL product recommendations<\/h2>\n

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

Engine Oil<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nViscosity<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL 5W-40 FS 100% Synthetic European Motor Oil<\/td>\n5W-40<\/a><\/td>\nEFMQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 0W-40 FS 100% Synthetic European Motor Oil<\/td>\n0W-40<\/a><\/td>\nEFOQT-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

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 and Engine 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

Other Fluids & Additives<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid<\/td>\nPSFCN-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Diesel Injector Clean Fuel Additive<\/td>\nADFPCN-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

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

The engine requires 6.9 quarts of oil when performing a service that includes the oil filter. Note that if your model is equipped with an oil cooler, additional oil may be required when the cooler is drained during service.<\/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

Engine Service Specifications<\/h3>\n