{"id":771,"date":"2026-07-05T11:37:39","date_gmt":"2026-07-05T15:37:39","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1985-chevrolet-s10-pickup-2-2l-4-cyl-diesel-maintenance-guide\/"},"modified":"2026-07-05T11:37:39","modified_gmt":"2026-07-05T15:37:39","slug":"1985-chevrolet-s10-pickup-2-2l-4-cyl-diesel-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/1985-chevrolet-s10-pickup-2-2l-4-cyl-diesel-maintenance-guide\/","title":{"rendered":"1985 Chevrolet S10 Pickup 2.2L Diesel Maintenance Guide: Oil & Fluids"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

For the 1985 Chevrolet S10 Pickup with the 2.2L 4-cylinder Diesel engine (Engine Code S), the oil capacity is 5.5 quarts<\/strong> (including filter replacement). The preferred viscosity for temperatures below 38\u00b0C is SAE 10W-30<\/strong>. AMSOIL recommends using Signature Series 10W-30 100% Synthetic Max-Duty Diesel Oil<\/a><\/strong> for outstanding extreme-pressure protection.<\/p>\n

What oil does a 1985 Chevrolet S10 2.2L Diesel take?<\/h2>\n

The engine requires an oil with the CG-4 specification. Depending on your ambient operating temperatures, you should select one of the following viscosities: SAE 10W-30 is preferred for temperatures below 38\u00b0C; 15W-40 is suitable for temperatures above -12\u00b0C; and 30 weight oil is recommended for temperatures above 0\u00b0C.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup data, the following products are recommended for your 1985 Chevrolet S10 Pickup diesel engine and drivetrain components:<\/p>\n

Engine Oil Options<\/h3>\n
\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>\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

Transmission & Gear Fluids<\/h3>\n
\n\n\n\n\n\n\n\n
Component<\/th>\nProduct Name<\/th>\nPart Code<\/th>\n<\/tr>\n
Automatic Transmission<\/td>\nSignature Series Fuel-Efficient ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n
Automatic Transmission<\/td>\nOE Fuel-Efficient ATF<\/td>\nOTLQT-EA<\/a><\/td>\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

Coolant Options<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nType<\/th>\nPart Code<\/th>\n<\/tr>\n
Passenger Car & Light Truck Antifreeze<\/td>\n50\/50 Pre-mix (OAT)<\/td>\nANTPC1G-EA<\/a><\/td>\n<\/tr>\n
Propylene Glycol Antifreeze<\/td>\nConcentrate<\/td>\nANT1G-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>\nCG-4<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Capacity & Torque<\/h3>\n
\n\n\n\n\n
Measurement<\/th>\nValue<\/th>\n<\/tr>\n
Capacity (with filter)<\/td>\n5.5 quarts<\/td>\n<\/tr>\n
Oil Drain Plug Torque<\/td>\n12-20 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note: Always check the oil level after refilling to ensure accuracy.<\/em><\/p>\n

How much transmission fluid does it take?<\/h2>\n

For vehicles equipped with the 4-speed THM700-R4 automatic transmission, the total fill capacity is 11.2 quarts, while the initial fill is 5 quarts. Note that manufacturer technical service bulletins have updated this specification from Dexron II or III to Dexron VI.<\/p>\n

Automatic Transmission Details<\/h3>\n
\n\n\n\n\n
Specification<\/th>\nNote<\/th>\n<\/tr>\n
Transmission Type<\/td>\nTHM700-R4<\/td>\n<\/tr>\n
Updated Spec<\/td>\nDexron VI (per manufacturer TSB)<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Manual Transmission Details<\/h3>\n
\n\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Gear Lube Spec<\/td>\nGL-5 (All Temps)<\/td>\n<\/tr>\n
Capacity<\/td>\n8 pints<\/td>\n<\/tr>\n
Canada Note<\/td>\nUse 80W in Canada<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant and Maintenance Specifications<\/h2>\n

The cooling system capacity varies based on the specific configuration. For models with ‘O AC’, the capacity is 11.6 quarts, while ‘AC’ configurations require 12.2 quarts.<\/p>\n

Coolant Capacity<\/h3>\n
\n\n\n\n\n
Configuration<\/th>\nCapacity<\/th>\n<\/tr>\n
With O AC<\/td>\n11.6 quarts<\/td>\n<\/tr>\n
With AC<\/td>\n12.2 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Filter Recommendations<\/h3>\n

Oil Filter:<\/strong> No specific recommendations available from the source data.<\/p>\n

Air Filter:<\/strong> No specific recommendations available from the source data.<\/p>\n

Oil Vapor Filter:<\/strong> No specific recommendations available from the source data.<\/p>\n

Common diesel oil-related concerns and how AMSOIL products may help<\/h2>\n
\n\n\n\n\n\n
Concern<\/th>\nWhy it matters<\/th>\nAMSOIL product<\/th>\nHow it may help<\/th>\nLimitation<\/th>\n<\/tr>\n
Engine Wear<\/td>\nDiesel engines face high pressure and friction.<\/td>\nDTTQT-EA<\/a><\/td>\nDelivers up to 6X more wear protection.<\/td>\nRequires regular oil changes.<\/td>\n<\/tr>\n
Extreme Temperatures<\/td>\nViscosity changes can affect lubrication.<\/td>\nDHDQT-EA<\/a><\/td>\nExcels in extreme temperatures.<\/td>\nNot a substitute for proper viscosity selection.<\/td>\n<\/tr>\n
Gear\/Axle Wear<\/td>\nHeavy loads cause heat and friction in gears.<\/td>\nSVGPK-EA<\/a><\/td>\nControls thermal runaway and protects against wear.<\/td>\nDiagnosis of mechanical failure may be required.<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

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

When maintaining a 1985 diesel variant, owners should prioritize high-quality fuel filtration. Given the age of these vehicles, it is highly recommended to inspect aging rubber components, vacuum lines, and electrical connections. If this is a diesel configuration, monitoring the glow plug system (if applicable) is essential for reliable cold starts.<\/p>\n

Common maintenance concerns for this vehicle<\/h2>\n