{"id":510,"date":"2026-06-17T07:38:27","date_gmt":"2026-06-17T11:38:27","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1985-peugeot-505-2-5l-4-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-06-17T07:38:27","modified_gmt":"2026-06-17T11:38:27","slug":"1985-peugeot-505-2-5l-4-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1985-peugeot-505-2-5l-4-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"1985 Peugeot 505 2.5L 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

For the 1985 Peugeot 505 with the 2.5L 4-cylinder Engine Code [6] Diesel Turbo, the engine oil capacity is 5.3 quarts (with filter). Recommended viscosities include 10W-30 for temperatures below 14\u00b0C, 10W-40 for all temperatures, and 15W-40 for temperatures above -10\u00b0C. AMSOIL recommends using Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil<\/a> (DEOQT-EA<\/a>) for superior wear protection and efficiency.<\/p>\n

What oil does a 1985 Peugeot 505 2.5L Diesel Turbo take?<\/h2>\n

The engine requires an oil with a CF grade specification. Depending on your operating environment, the following viscosities are recommended: 10W-30 for temperatures below 14\u00b0C, 10W-40 for all temperature ranges, and 15W-40 for environments above -10\u00b0C.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup data, the following products are recommended for your 1985 Peugeot 505 diesel engine and drivetrain components.<\/p>\n

Engine Oil Recommendations<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil<\/td>\nDEOQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil<\/td>\nADOQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant & Antifreeze Recommendations<\/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 Fluid Recommendations<\/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

Manual Transmission Oil Recommendations<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Premium Protection 10W-40 100% Synthetic Motor Oil<\/td>\nAMOQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Extended-Life 10W-40 100% Synthetic Motor Oil<\/td>\nXLOQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Specifications<\/h3>\n
\n\n\n\n\n\n
Viscosity<\/th>\nCondition<\/th>\n<\/tr>\n
10W-30<\/td>\nBelow 14\u00b0C<\/td>\n<\/tr>\n
10W-40<\/td>\nAll Temperatures<\/td>\n<\/tr>\n
15W-40<\/td>\nAbove -10\u00b0C<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Capacity<\/h3>\n
\n\n\n\n
Description<\/th>\nCapacity<\/th>\n<\/tr>\n
Oil capacity with filter change<\/td>\n5.3 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note: After refilling, always check the oil level manually.<\/em><\/p>\n

Automatic Transmission Fluid Specifications<\/h2>\n

The 1985 Peugeot 505 utilizes different capacities depending on whether you have a 3-speed or 4-speed automatic transmission.<\/p>\n

3-Speed Automatic (3HP-22)<\/h3>\n
\n\n\n\n\n
Fill Type<\/th>\nCapacity<\/th>\n<\/tr>\n
Initial Fill<\/td>\n1.7 quarts<\/td>\n<\/tr>\n
Total Fill<\/td>\n5.5 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

4-Speed Automatic (4HP-22)<\/h3>\n
\n\n\n\n\n
Fill Type<\/th>\nCapacity<\/th>\n<\/tr>\n
Initial Fill<\/td>\n2.7 quarts<\/td>\n<\/tr>\n
Total Fill<\/td>\n7.9 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Manual Transmission Fluid Specifications<\/h2>\n

For the BA 10\/5 (5-SPD) and BA 7\/5 (5-SPD) manual transmissions, the required viscosity is 10W-40 for all temperatures. The capacity for these units is 3.4 pints.<\/p>\n

Coolant Specifications<\/h2>\n

The cooling system has a total capacity of 10.6 quarts. AMSOIL offers both pre-mixed and concentrated options to maintain thermal management in this diesel engine.<\/p>\n

Coolant Options<\/h3>\n
\n\n\n\n\n
Product Type<\/th>\nFormulation Note<\/th>\n<\/tr>\n
Passenger Car & Light Truck Antifreeze<\/td>\nEthylene glycol 50\/50 pre-mix<\/td>\n<\/tr>\n
Propylene Glycol Antifreeze<\/td>\nConcentrated (requires mixing with distilled water)<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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