{"id":687,"date":"2026-06-29T20:50:28","date_gmt":"2026-06-30T00:50:28","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1984-pontiac-acadian-1-8l-4-cyl-diesel-maintenance-guide\/"},"modified":"2026-06-29T20:50:28","modified_gmt":"2026-06-30T00:50:28","slug":"1984-pontiac-acadian-1-8l-4-cyl-diesel-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1984-pontiac-acadian-1-8l-4-cyl-diesel-maintenance-guide\/","title":{"rendered":"1984 Pontiac Acadian 1.8L Diesel Maintenance Guide: Oil & Filter Specs"},"content":{"rendered":"
\n
\n
\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

What oil does a 1984 Pontiac Acadian 1.8L Diesel take?<\/h2>\n

The 1984 Pontiac Acadian with the 1.8L 4-cylinder diesel engine (Engine Code D) requires an oil viscosity of 10W-30 for temperatures below 38\u00b0C, or 30 viscosity for continuous driving above 0\u00b0C. The engine holds a capacity of 6.1 quarts with a filter change. AMSOIL recommends using high-quality synthetic diesel oils like Signature Series 10W-30<\/a> or Heavy-Duty 100% Synthetic Diesel Oil<\/a>.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup for this vehicle, the following products are recommended to maintain engine and component performance.<\/p>\n

Engine Oil Recommendations<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nViscosity<\/th>\nCode<\/th>\n<\/tr>\n
AMSOIL Signature Series Max-Duty Diesel Oil<\/td>\n10W-30<\/a><\/td>\nDTTQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 10W-30 Heavy-Duty Synthetic Diesel Oil<\/td>\n10W-30<\/a><\/td>\nADNQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Signature Series Max-Duty Diesel Oil<\/td>\n5W-30<\/a><\/td>\nDHDQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Oil Specification:<\/strong> CF<\/p>\n

Filter & Coolant Recommendations<\/h3>\n
\n\n\n\n\n\n
Component<\/th>\nProduct Name<\/th>\nCode<\/th>\n<\/tr>\n
Oil Filter<\/td>\nWIX Oil Filter<\/td>\n51324-EA<\/a><\/td>\n<\/tr>\n
Antifreeze<\/td>\nPassenger Car & Light Truck<\/td>\nANTPC1G-EA<\/a><\/td>\n<\/tr>\n
Antifreeze<\/td>\nPropylene Glycol<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Transmission & Gear Lubricants<\/h3>\n
\n\n\n\n\n\n
Component<\/th>\nProduct Name<\/th>\nCode<\/th>\n<\/tr>\n
Manual Transmission<\/td>\nSEVERE GEAR\u00ae 80W-90<\/a><\/td>\nAGLPK-EA<\/a><\/td>\n<\/tr>\n
Manual Transmission<\/td>\nSEVERE GEAR\u00ae 75W-90<\/a><\/td>\nSVGPK-EA<\/a><\/td>\n<\/tr>\n
Manual Transmission<\/td>\nSEVERE GEAR\u00ae 75W-110<\/a><\/td>\nSVTPK-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Proper lubrication is critical for the longevity of the 1.8L diesel engine. Ensure you follow the correct viscosity based on your operating environment.<\/p>\n

Oil Viscosity & Capacity<\/h3>\n
\n\n\n\n\n
Condition<\/th>\nRecommended Viscosity<\/th>\n<\/tr>\n
Below 38\u00b0C<\/td>\n10W-30<\/td>\n<\/tr>\n
Above 0\u00b0C (Continuous Driving)<\/td>\n30<\/td>\n<\/tr>\n<\/table>\n<\/div>\n
\n\n\n\n\n
Measurement<\/th>\nValue<\/th>\n<\/tr>\n
Oil Capacity (with filter)<\/td>\n6.1 quarts<\/td>\n<\/tr>\n
Oil Drain Plug Torque<\/td>\n40-47 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Air and Vapor Filters<\/h3>\n

No recommendations available for the Air Filter or Oil Vapor Filter from the source data.<\/p>\n

Cooling System Specifications<\/h2>\n

The cooling system requires specific attention to prevent corrosion and overheating in this diesel application.<\/p>\n

\n\n\n\n
Component<\/th>\nCapacity<\/th>\n<\/tr>\n
Coolant Capacity<\/td>\n9 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant Options:<\/strong><\/p>\n