{"id":915,"date":"2026-07-11T17:53:45","date_gmt":"2026-07-11T21:53:45","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1985-mercedes-benz-300sd-3-0l-5-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-07-11T17:53:45","modified_gmt":"2026-07-11T21:53:45","slug":"1985-mercedes-benz-300sd-3-0l-5-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1985-mercedes-benz-300sd-3-0l-5-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"1985 Mercedes Benz 300SD Diesel 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

For the 1985 Mercedes Benz 300SD with the 3.0L 5-cylinder engine (Code 617.951 H Diesel Turbo), the oil capacity is 8.5 quarts with a filter change. Recommended viscosities include 0W-30 or 0W-40 for all temperatures, 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> (EFMQT-EA<\/a>) for high-performance European diesel protection.<\/p>\n

What oil does a 1985 Mercedes Benz 300SD take?<\/h2>\n

The 1985 Mercedes Benz 300SD with the 617.951 H engine requires specific viscosities based on operating temperatures. The AMSOIL lookup oil grade is SEO41. For all temperature ranges, 0W-30 and 0W-40 are suitable. In warmer climates (above -20\u00b0C), 10W-40 is an option, while for temperatures above -25\u00b0C, 5W-30, 5W-40, and 5W-50 are recommended.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup data, here are the recommended products for your 1985 Mercedes Benz 300SD 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

Transmission & Steering Fluids<\/h3>\n
\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
AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid<\/td>\nPSFCN-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Brake Fluid<\/h3>\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<\/table>\n<\/div>\n

Diesel Fuel Additives & Maintenance<\/h3>\n
\n\n\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
MANN-FILTERS Fuel Filters<\/td>\nWK8173X-EA<\/a><\/td>\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
AMSOIL Engine Fogging Oil<\/td>\nfogsc-ea<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Specifications & Viscosity<\/h3>\n
\n\n\n\n\n\n
Viscosity Range<\/th>\nTemperature Condition<\/th>\n<\/tr>\n
0W-30, 0W-40<\/td>\nAll TEMPS<\/td>\n<\/tr>\n
10W-40<\/td>\nAbove -20\u00b0C<\/td>\n<\/tr>\n
5W-30, 5W-40, 5W-50<\/td>\nAbove -25\u00b0C<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Capacity & Torque<\/h3>\n

When performing an oil change, ensure you have the correct volume to prevent engine damage.<\/p>\n

\n\n\n\n\n
Description<\/th>\nValue<\/th>\n<\/tr>\n
Oil Capacity (with filter)<\/td>\n8.5 quarts<\/td>\n<\/tr>\n
Oil Drain Plug Torque<\/td>\n20 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note:<\/strong> On models equipped with an oil cooler, additional oil may be required when the cooler is drained. Always allow 5 minutes after refilling or turning the engine off before checking the oil level.<\/p>\n

How much transmission fluid does it take?<\/h2>\n

For vehicles equipped with the 4-speed 722.3 automatic transmission, the total fill capacity is 7.7 quarts, while the initial fill requirement is 6.6 quarts. The AMSOIL lookup note references the 722.3 specification for this application.<\/p>\n

What are the coolant and brake fluid requirements?<\/h2>\n

The cooling system has a capacity of 13.2 quarts. For braking, the vehicle requires specific formulations; the AMSOIL lookup note references DOT 4 plus (specifically part numbers 0009895605090109, 0009895605110111, or 000989080701) or products approved on MB Sheet 331.0.<\/p>\n

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