{"id":790,"date":"2026-07-06T17:34:29","date_gmt":"2026-07-06T21:34:29","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1984-gmc-c1500-2wd-pickup-6-2l-8-cyl-diesel-maintenance-guide\/"},"modified":"2026-07-06T17:34:29","modified_gmt":"2026-07-06T21:34:29","slug":"1984-gmc-c1500-2wd-pickup-6-2l-8-cyl-diesel-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1984-gmc-c1500-2wd-pickup-6-2l-8-cyl-diesel-maintenance-guide\/","title":{"rendered":"1984 GMC C1500 2WD Pickup 6.2L Diesel Oil & Maintenance Guide"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

For the 1984 GMC C1500 2WD Pickup with the 6.2L 8-cylinder diesel engine (Engine Code C), the oil capacity is 7 quarts with a filter change. The preferred viscosity is SAE 10W-30 for temperatures above -18\u00b0C. AMSOIL recommends using Signature Series 10W-30 Max-Duty Diesel Oil<\/a> (DTTQT-EA<\/a>) paired with an AMSOIL Oil Filter<\/a> (EAO24-EA<\/a>) for optimal protection.<\/p>\n

What oil does a 1984 GMC C1500 6.2L Diesel take?<\/h2>\n

The 1984 GMC C1500 with the 6.2L diesel engine requires an oil grade of CF-4. Depending on your operating temperature, you should select the appropriate viscosity: SAE 10W-30 is preferred for temperatures above -18\u00b0C, 15W-40 for above -12\u00b0C, and 20W-20 for above -7\u00b0C.<\/p>\n

The engine oil capacity for the 1984 GMC C1500 6.2L diesel is 7 quarts when performing a service that includes replacing the oil filter. Always check the oil level after refilling to ensure accuracy.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup for your 1984 GMC C1500, here are the recommended fluids and filters to maintain your diesel engine and drivetrain.<\/p>\n

Engine Oil Options<\/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 Signature Series Max-Duty Diesel Oil<\/td>\n5W-30<\/a><\/td>\nDHDQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Heavy-Duty Synthetic Diesel Oil<\/td>\n10W-30<\/a><\/td>\nADNQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Oil Filter Options<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nCode<\/th>\n<\/tr>\n
AMSOIL Oil Filter<\/td>\nEAO24-EA<\/a><\/td>\n<\/tr>\n
WIX Oil Filter<\/td>\n51061-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant & Transmission Fluids<\/h3>\n
\n\n\n\n\n\n\n\n
Component<\/th>\nProduct Name<\/th>\nCode<\/th>\n<\/tr>\n
Coolant<\/td>\nAMSOIL Passenger Car & Light Truck Antifreeze<\/td>\nANTPC1G-EA<\/a><\/td>\n<\/tr>\n
Coolant<\/td>\nAMSOIL Propylene Glycol Antifreeze<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n
ATF (THM350C)<\/td>\nAMSOIL Signature Series Fuel-Efficient ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n
ATF (THM400)<\/td>\nAMSOIL Signature Series Fuel-Efficient ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n
ATF (General)<\/td>\nAMSOIL OE Fuel-Efficient 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-4<\/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
Above -18\u00b0C<\/td>\n10W-30 (Preferred)<\/td>\n<\/tr>\n
Above -12\u00b0C<\/td>\n15W-40<\/td>\n<\/tr>\n
Above -7\u00b0C<\/td>\n20W-20<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Engine Oil Details<\/h2>\n

For high-performance protection, AMSOIL offers several synthetic options for this engine architecture:<\/p>\n