{"id":648,"date":"2026-06-27T07:32:29","date_gmt":"2026-06-27T11:32:29","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1982-buick-regal-5-7l-8-cyl-diesel-maintenance-guide\/"},"modified":"2026-06-27T07:32:29","modified_gmt":"2026-06-27T11:32:29","slug":"1982-buick-regal-5-7l-8-cyl-diesel-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1982-buick-regal-5-7l-8-cyl-diesel-maintenance-guide\/","title":{"rendered":"1982 Buick Regal 5.7L Diesel Maintenance Guide: Oil, Filters & Fluids"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

For the 1982 Buick Regal with the 5.7L 8-cylinder Diesel engine (Code N), the oil capacity is 7 quarts with a filter change. Recommended viscosities include 10W-30 for temperatures below 16\u00b0C, 15W-40 for -18 to 16\u00b0C, and 30 weight for continuous driving above 0\u00b0C. AMSOIL recommends using Signature Series 10W-30 Max-Duty Diesel Oil<\/a> (DTTQT-EA<\/a>) paired with an AMSOIL Oil Filter<\/a> (EAO64-EA<\/a>).<\/p>\n

What oil does a 1982 Buick Regal 5.7L Diesel take?<\/h2>\n

The engine requires an oil with a CF grade specification. Depending on your operating temperature, the recommended viscosities are 10W-30 (for temperatures below 16\u00b0C), 15W-40 (for -18 to 16\u00b0C), or 30 weight for continuous driving in temperatures above 0\u00b0C.<\/p>\n

AMSOIL product recommendations<\/h2>\n

The following AMSOIL products are specifically listed for the 1982 Buick Regal 5.7L Diesel engine to assist with routine maintenance and performance optimization.<\/p>\n

Engine Oil Options<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
AMSOIL Signature Series 10W-30 100% Synthetic Max-Duty Diesel Oil<\/td>\nDTTQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 10W-30 Heavy-Duty 100% Synthetic Diesel Oil<\/td>\nADNQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil<\/td>\nDHDQT-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
AMSOIL Oil Filter<\/td>\nEAO64-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<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
AMSOIL Signature Series Fuel-Efficient 100% Synthetic ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n
AMSOIL OE Fuel-Efficient 100% Synthetic ATF<\/td>\nOTLQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Specifications<\/h3>\n
\n\n\n\n
Specification<\/th>\nDetails<\/th>\n<\/tr>\n
Oil Grade<\/td>\nCF<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Viscosity Guide<\/h3>\n
\n\n\n\n\n\n
Temperature Range<\/th>\nRecommended Viscosity<\/th>\n<\/tr>\n
Below 16\u00b0C<\/td>\n10W-30<\/td>\n<\/tr>\n
-18 to 16\u00b0C<\/td>\n15W-40<\/td>\n<\/tr>\n
Above 0\u00b0C (Continuous Driving)<\/td>\n30<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

How much oil does it take with a filter change?<\/h2>\n

The total capacity for the 1982 Buick Regal 5.7L Diesel engine is 7 quarts when replacing the oil filter. It is important to check the oil level after refilling to ensure accuracy.<\/p>\n

Oil Change Specifications<\/h3>\n
\n\n\n\n\n
Component<\/th>\nSpecification\/Torque<\/th>\n<\/tr>\n
Capacity (with filter)<\/td>\n7 quarts<\/td>\n<\/tr>\n
Oil Drain Plug Torque<\/td>\n30 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Automatic Transmission Fluid Requirements<\/h2>\n

The transmission fluid requirements vary by the specific transmission model installed in your vehicle. Note that for all listed transmissions, the manufacturer’s Technical Service Bulletin has updated the specification from Dexron II or III to Dexron VI.<\/p>\n

Transmission Capacities<\/h3>\n
\n\n\n\n\n\n\n
Transmission Model<\/th>\nInitial Fill<\/th>\nTotal Fill<\/th>\n<\/tr>\n
THM325-4L<\/td>\n3.2 quarts<\/td>\n10 quarts<\/td>\n<\/tr>\n
THM200-4R<\/td>\n5 quarts<\/td>\n11 quarts<\/td>\n<\/tr>\n
THM250C<\/td>\n4 quarts<\/td>\n10.8 quarts<\/td>\n<\/tr>\n
THM350C<\/td>\n3 quarts<\/td>\n10 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Owners of the 5.7L V8 diesel engine should prioritize rigorous maintenance due to the historical reliability challenges associated with this specific engine family. Key areas of focus include:<\/p>\n