{"id":346,"date":"2026-06-02T07:40:21","date_gmt":"2026-06-02T11:40:21","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1981-isuzu-pickup-2-2l-4-cyl-diesel-maintenance-guide\/"},"modified":"2026-06-02T07:40:21","modified_gmt":"2026-06-02T11:40:21","slug":"1981-isuzu-pickup-2-2l-4-cyl-diesel-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1981-isuzu-pickup-2-2l-4-cyl-diesel-maintenance-guide\/","title":{"rendered":"1981 Isuzu Pickup 2.2L Diesel 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

What oil does a 1981 Isuzu Pickup 2.2L Diesel take?<\/h2>\n

For the 1981 Isuzu Pickup with the 2.2L 4-cylinder S S Diesel engine, the required oil capacity is 6 quarts when changing with a filter. Recommended viscosities include 10W-30 for temperatures below 30\u00b0C, and 15W-40, 20W-40, or 20W-50 for temperatures above -14\u00b0C. AMSOIL recommends Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil<\/a> (DMEQT-EA<\/a>) for outstanding extreme-pressure protection.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup data, the following products are recommended for your 1981 Isuzu Pickup diesel engine and cooling system maintenance.<\/p>\n

Engine Oil Recommendations<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nViscosity<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series Max-Duty Diesel Oil<\/td>\n15W-40<\/a><\/td>\nDMEQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Heavy-Duty 100% Synthetic Diesel Oil<\/td>\n15W-40<\/a><\/td>\nADPQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant Recommendations<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nType<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Passenger Car & Light Truck Antifreeze & Coolant<\/td>\n50\/50 Pre-mix<\/td>\nANTPC1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Propylene Glycol Antifreeze and Engine Coolant<\/td>\nConcentrated<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Manual Transmission & Transfer Case<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nApplication Note<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series 5W-30<\/td>\n4WD (All Temps)<\/td>\nASLQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL 10W-30 Small-Engine Oil<\/td>\n4WD (SJ -18 to 32)<\/td>\nASEQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Proper lubrication is critical for the longevity of the 2.2L diesel engine. Always verify your current oil level after a refill.<\/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 30\u00b0C<\/td>\n10W-30<\/td>\n<\/tr>\n
Above -14\u00b0C<\/td>\n15W-40, 20W-40, 20W-50<\/td>\n<\/tr>\n
Above 0\u00b0C<\/td>\n30<\/td>\n<\/tr>\n
Above 24\u00b0C<\/td>\n40<\/td>\n<\/tr>\n
Below -14\u00b0C<\/td>\n5W-30 (Not recommended for sustained high-speed driving)<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Engine Oil Capacity<\/h3>\n
\n\n\n\n
Condition<\/th>\nCapacity<\/th>\n<\/tr>\n
With Filter Change<\/td>\n6 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

Manual Transmission & Transfer Case Specifications<\/h2>\n

Maintenance for the manual transmission and transfer case requires specific capacities and torque settings for plugs.<\/p>\n

Capacities<\/h3>\n