World's Best Oils & Filters for 1991 Chevrolet Trucks G20 LD Van

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AMSOIL manufacture's the World's best synthetic lubricant's & filters since 1972. AMSOIL also offers substitute brands such as WIX, Mann & Donaldson, making us your one-stop shop for all automotive maintenance needs.

How do I use this Product Cross Reference Guide?

Product Cross Reference Guide: This product cross reference guide follows recommendations outlined in your owners manual and also reflects periodic service recommendation updates from the original equipment manufacturer for this particular model (1991 Chevrolet Trucks G20 LD Van with engine code [C][J]) show example...

For example, the manufacturer may have recommended 5W30 motor oil at the time of production (owners manual) & later revised the recommendation to 5W20. This guide will reflect latest recommendation by the manufacturer for this model. If there are no special instructions from the manufacturer, the owner can choose to follow either one of the recommendation without voiding warranty hide example.

Optional Equipment Listing This guide lists all available equipment options such as transmission options, differentials etc. for 1991 Chevrolet Trucks G20 LD Van with engine code [C][J] hide.
Product Availability Listing This guide lists all available AMSOIL & substitute brand products that meet or exceed OEM (Chevrolet Trucks) recommendation for each equipment. Any one of the recommended product can be used. One may be better than the other, you can review product details & price or contact us to ask our opinion pertaining to your usage and preference hide.
Operating Temperature Original equipment manufacturer (OEM) sometimes provide different product recommendations based on operating environment temperature for a given equipment. This product cross reference guide will list such recommendations based on OEM guidelines. Some OEM recommended viscosity pertaining to a specific temperature range may not be available from AMSOIL.

However, AMSOIL products recommended for another temperature range can be safely used because AMSOIL synthetic lubricants are engineered to provide exceptional performance for significantly broader temperature range when compared to conventional & or other brand synthetic oils. For more information on a lubricants cold temperature performance; please refer to "Pour Point" from "Technical Properties" table located at the bottom of each lubricant product page hide.
Last Updated This product cross reference guide for 1991 Chevrolet Trucks G20 LD Van engine code [C][J] was last updated on 25th June 2018 hide.

     

1. Engine Oil

   Grade 1  »  CF-4
   Signature Series Max-Duty Synthetic Diesel Oil 15W-40 (DMEQT)
   Heavy-Duty Synthetic Diesel Oil 15W-40 (ADPQT)
   Above -18C  »  15W-40 [1]
   Above 0C  »  30
   Below 16C  »  10W-30
   

2. Automatic Transmission

   Automatic Transmission, THM700-R4  »  AF6 [2]

   Signature Series Fuel-Efficient Synthetic Automatic Transmission Fluid (ATL) (ATLQT)
   OE Fuel-Efficient Synthetic Automatic Transmission Fluid (OTLQT)
   

3. Rear Differential

   Differential, Rear W/ 8.5 RG  »  GL-5

   All TEMPS  »  80W-90 [3]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Severe Gear® 75W-90 (SVGQT)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 9.75 RG  »  GL-5

   All TEMPS  »  80W-90 [3]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Severe Gear® 75W-90 (SVGQT)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 10.5 RG Dana  »  GL-5

   All TEMPS  »  80W-90 [3]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Severe Gear® 75W-90 (SVGQT)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 9.5 RG  »  GL-5

   All TEMPS  »  80W-90 [3]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Severe Gear® 75W-90 (SVGQT)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 10.5 RG Chev  »  GL-5

   All TEMPS  »  80W-90 [3]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Severe Gear® 75W-90 (SVGQT)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 12.25 RG  »  GL-5

   All TEMPS  »  80W-90 [3]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Severe Gear® 75W-90 (SVGQT)
   Severe Gear® 75W-110 (SVTQT)
   

4. Power Steering Fluid

   Power Steering Fluid  »  PS003

   Power Steering Fluid (PSFCN)
   

5. Brake Fluid

   Brake Fluid  »  HB

   DOT 3 and 4 Brake Fluid (BFLVCN) [4]
   

6. Clutch Fluid

   Clutch Fluid  »  HB

   DOT 3 and 4 Brake Fluid (BFLVCN) [4]
   

7. Lubricants & Fluids Comments  »  [*]

   [1] SAE 15W-40 is preferred.
   [2] This specification has been updated from Dexron II or III to
   Dexron VI per a Technical Service Bulletin from the
   manufacturer
   [3] In Canada use 80W.
   [4] Hydraulic Brake Fluid, DOT 3. Original recommendation
   P/N 12377967 has been replaced by P/N 19299818.
   
   

8. Capacities (Drive Train Fluids)

   Engine, with filter  »  6.6 liters [1]
   Cooling System, With Rear HEAT Initial Fill  »  25.5 liters
   Passenger Car & Light Truck Antifreeze & Coolant
   AMSOIL Antifreeze and Engine Coolant
   Cooling System, Without RR HEAT Initial Fill  »  22.5 liters
   Passenger Car & Light Truck Antifreeze & Coolant
   AMSOIL Antifreeze and Engine Coolant
   Automatic Transmission, THM700-R4 Initial Fill  »  4.7 liters
   Automatic Transmission, Total Fill
   4 speed THM700-R4  »  10.9 liters
   Differential, With 10.5 RingGear Chev Rear  »  3.4 liters
   Differential, With 10.5 RingGear Dana Rear  »  2.6 liters
   Differential, With 12.25 RingGear Rear  »  6.6 liters
   Differential, With 8.5 RingGear Rear  »  2 liters
   Differential, With 9.5 RingGear Rear  »  2.6 liters
   Differential, With 9.75 RingGear Rear  »  2.6 liters
   ANTPC ANT ANTPC ANT
   Capacities Comments
   [1] After refill check oil level.
   

9. Chassis Lubrication

   8-16 Fittings, 0 Plugs  »  LB
   Synthetic Multi-Purpose Grease NLGI #2 (GLC3P)
   Synthetic Water Resistant Grease (GWR3P)
   DOMINATOR® Synthetic Racing Grease (GRGCR)
   

10. Torque Specifications

    Oil Drain Plug  »  17 ft/lbs
    

Close Panels

1. Filters: Oil, Air, Cabin, Fuel, Transmission, Hydraulic & Crankcase

   Oil Filter	25, 000-Mile Ea Oil Filter (EAO24)
   Oil Filter	WIX 51060 Oil Filter
   Air Filter	WIX 46096 Air Filter	[1]
   Air Filter	WIX 42096 Air Filter	[2]
   Fuel Filter	WIX 33136 Fuel Filter
   Transmission Filter	WIX 58897 Trans Filter

   
   Filter Comments
   [1] Heavy Duty Wrapped Version
   [2] Standard Version
   

2. Diesel Engine Fuel Additives

   Diesel 4-IN-1 (ADB)

   Diesel 4-IN-1 (ADB)
   
   AMSOIL Diesel 4-IN-1 (ADB) fuel additive cleans, lubricates, improves cold flow and increases cetane number by up to 4 points. Diesel 4-IN-1 (ADB) combines the superior detergency and improved lubricity of AMSOIL Diesel Injector Clean, the excellent ...

   
   Diesel Cetane Boost (ACB)

   Diesel Cetane Boost (ACB)
   
   A performance concentrate that delivers maximum results Raises the cetane number of diesel fuel up to seven points for maximum horsepower, increased fuel economy and easier starts in all diesel engines. AMSOIL Diesel Cetane Boost makes no sacrific...

   
   Diesel Cold Flow (ACF)

   Diesel Cold Flow (ACF)
   
   *** Product Replaced with New & Improved Diesel Cold Flow (ADD) *** A performance concentrate that delivers maximum results Formulated with an advanced deicer to enhance fuel flow and help prevent fuel filter plugging in cold temperatures....

   
   Diesel Cold Flow (ADD)

   Diesel Cold Flow (ADD)
   
   AMSOIL Diesel Cold Flow (ADD) combats diesel fuel gelling by improving diesel cold-flow ability. It is formulated with an advanced deicer to enhance fuel flow and help prevent fuel filter plugging in cold temperatures. Package sizes include: 16...

   
   Diesel Injector Clean (ADF)

   Diesel Injector Clean (ADF)
   
   AMSOIL Diesel Injector Clean (ADF/ADFP) removes performance-robbing deposits from diesel fuel injectors to help restore horsepower and improve fuel economy. It is formulated for all types of diesel engines, including high-pressure common-rail designs...

   
   Diesel Injector Clean + Cold Flow (DFC)

   Diesel Injector Clean + Cold Flow (DFC)
   
   *** Discontinued - replaced with Diesel All In One (ADB) *** A performance concentrate that delivers maximum results Combines the superior detergency of AMSOIL Diesel Concentrate (ADF) and the excellent anti-gelling properties of AMSOIL Cold...

   
   Diesel Recovery Emergency Fuel Treatment (DRC)

   Diesel Recovery Emergency Fuel Treatment (DRC)
   
   AMSOIL Diesel Recovery quickly dissolves gelled fuel, thaws frozen fuel filters and reduces the need for a new filter, saving both money and an inconvenient trip to a parts store. Performs well in all diesel fuels, including ULSD, off-road and biodie...

   
   Injector Clean + Cetane Boost (ADS)

   Injector Clean + Cetane Boost (ADS)
   
   AMSOIL Diesel Injector Clean + Cetane Boost (ADS) combines the superior detergency and improved lubricity of AMSOIL Diesel Injector Clean and the increased horsepower and cetane of AMSOIL Cetane Boost in one convenient package. Package sizes inclu...

   
   

Close Panels

15W40 Signature Series CK-4 Diesel Oil (DME)

Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL Signature Series Max-Duty Synthetic Diesel Oil delivers 6X better wear protection than required by the Detroit Diesel DD13 ...

15W40 Heavy-Duty CK-4 Diesel Oil (ADP)

AMSOIL Heavy-Duty Synthetic Diesel Oil is formulated for hard-working equipment. It is engineered to provide 4X better wear protection than required by the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222, giving you the edge to keep tr...

Signature Series Fuel-Efficient Synthetic ATF

A fuel efficient automatic transmission fluid recommended for GM, Ford and Toyota transmissions where lighter viscosity oil is required. Provides the same excellent protection and performance as AMSOIL Signature Series Multi-Vehicle ATF. Recommended ...

OE Series Fuel-Efficient Synthetic ATF

AMSOIL OE Synthetic Automatic Transmission Fluid provides passenger-car/light-truck transmissions excellent wear protection, sludge resistance and extreme-temperature performance throughout original equipment manufacturer (OEM)-recommended drain inte...

SEVERE GEAR 80W-90 (AGL)

A multi-functional lubricant designed to surpass the requirements of equipment and automotive applications calling for an SAE 80W-90 viscosity grade. Formulated with wax-free synthetic base oils and high-quality additives, AMSOIL SEVERE GEAR® res...

75W 90 Severe Gear® Extreme Pressure (SVG)

Formulated for the severe operating conditions of today’s pick-up trucks, SUVs, heavy equipment and other hard-working vehicles. AMSOIL SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricants are premium grade gear oils specifically engi...

75W-110 Severe Gear® Extreme Pressure (SVT)

AMSOIL SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricants are engineered for high-demand applications, including trailer towing, heavy hauling, 4X4 off-road driving, commercial use and racing. Protects gears and bearings from scoring and wea...

DOT 3 and 4 Synthetic Brake Fluid (BFLV)

*** This item is available for US customers only *** Brake fluid acts as a hydraulic fluid, transferring power and lubricating brake system components while also preventing corrosion. It must contend with extreme heat and the inevitable moi...

Multi-Vehicle Synthetic Power Steering Fluid (PSF)

AMSOIL Multi-Vehicle Synthetic Power Steering Fluid provides excellent wear protection. Its synthetic formulation delivers better lubricity and reduced friction, resulting in cooler operating temperatures, longer component life and quieter operation....

Synthetic Multi-Purpose Grease NLGI #2 (GLC)

AMSOIL Synthetic Multi-Purpose Grease is qualified against the highest grease standards and designed for multiple-use applications. Composed of premium-quality synthetic base oils and calcium sulfonate complex thickeners, Multi-Purpose Grease provide...

Synthetic Water Resistant Grease NLGI#2 (GWR)

Superior Lubrication and Protection in Automotive and Industrial Applications With Extensive Exposure to Water Package sizes include: 3-oz. Cartridges (not sold individually, comes in a pack of 3) 3-oz. Cartridges (case of 10) 14-oz. Cartri...

DOMINATOR Synthetic Racing Grease (GRG)

Exceptional High-Speed/High-Temperature Performance. AMSOIL DOMINATOR® Synthetic Racing Grease is engineered to protect high-performance bearings and chassis components in racing applications operated on snow, dirt, water or track. Package siz...

Passenger Vehicle Antifreeze (ANTPC)

Ethylene Glycol 50/50 Pre-Mix Formulation AMSOIL Passenger Car/Light Truck Antifreeze & Coolant provides superior heat transfer and excellent protection against corrosion, freezing and boilover. It provides maximum protection in extreme temper...

Antifreeze and Engine Coolant (ANT)

AMSOIL Antifreeze & Coolant (ANT) is a low-toxicity propylene glycol antifreeze formulated to provide benefits far beyond those found in today's conventional antifreeze and coolant products. This revolutionary formulation provides maximum antifre...

AMSOIL Ea Oil Filters

AMSOIL Ea Oil Filters feature synthetic nanofiber technology for maximum efficiency. Guaranteed for up to 15,000 miles or up to 25,000 miles, depending on application, when used with AMSOIL synthetic motor oil.

WIX Automotive, Light Truck & Racing Oil Filters

WIX Oil filters are made with full metal base plate for superior strength at the double seal & also feature a silicone anti-drainback valve. Glass enhanced media in WIX oil filters offers greater efficiency, capturing more 10 to 12 micron sized particles than other cellulose or synthetic blend medias.

WIX Automotive & Light Truck Transmission Filters

WIX Transmission Filters protect automatic transmissions against contaminants in the transmission fluid system. Proper filtration helps improve transmission life by minimizing wear and preventing sticking and scoring of sensitive shift control valves.