{"id":655,"date":"2026-06-27T18:56:27","date_gmt":"2026-06-27T22:56:27","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1983-ford-f-350-pickup-6-9l-8-cyl-diesel-maintenance-guide\/"},"modified":"2026-06-27T18:56:27","modified_gmt":"2026-06-27T22:56:27","slug":"1983-ford-f-350-pickup-6-9l-8-cyl-diesel-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1983-ford-f-350-pickup-6-9l-8-cyl-diesel-maintenance-guide\/","title":{"rendered":"1983 Ford F-350 6.9L Diesel Oil & Maintenance Guide"},"content":{"rendered":"
\n
\n
\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

What oil does a 1983 Ford F-350 6.9L Diesel take?<\/h2>\n

The 1983 Ford F-350 with the 6.9L 8-cylinder diesel engine requires an oil viscosity of 10W-30 (for temperatures below 32\u00b0C), 15W-40 (above -18\u00b0C), 20W-20 (-12 to 21\u00b0C), 20W-40 (above -12\u00b0C), or 30 (above 0\u00b0C). The engine oil capacity is 10 quarts with a filter change. AMSOIL recommends using Signature Series 15W-40<\/a> or Heavy-Duty 15W-40 Synthetic Diesel Oil<\/a>.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup for your 1983 Ford F-350, here are the recommended fluids and filters to maintain engine performance and longevity.<\/p>\n

Engine Oil Options<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
AMSOIL Signature Series 15W-40 Max-Duty Diesel Oil<\/td>\nDMEQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 15W-40 Heavy-Duty Synthetic Diesel Oil<\/td>\nADPQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Oil Filter<\/h3>\n
\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
WIX Oil Filter<\/td>\n51742-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 & 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 (C6 Transmission)<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
AMSOIL Signature Series Multi-Vehicle ATF<\/td>\nATFPK-EA<\/a><\/td>\n<\/tr>\n
AMSOIL OE Multi-Vehicle ATF<\/td>\nOTFQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Torque-Drive\u00ae 100% Synthetic ATF<\/td>\nATD1G-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Proper lubrication is critical for the 6.9L diesel engine to prevent premature wear and manage high operating temperatures.<\/p>\n

Oil Viscosity Guide<\/h3>\n
\n\n\n\n\n\n\n\n
Temperature Range<\/th>\nRecommended Viscosity<\/th>\n<\/tr>\n
Below 32\u00b0C<\/td>\n10W-30<\/td>\n<\/tr>\n
Above -18\u00b0C<\/td>\n15W-40<\/td>\n<\/tr>\n
-12 to 21\u00b0C<\/td>\n20W-20<\/td>\n<\/tr>\n
Above -12\u00b0C<\/td>\n20W-40<\/td>\n<\/tr>\n
Above 0\u00b0C<\/td>\n30<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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