1989 GMC Trucks Suburban OilsR.Us - Only the Best!

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& We offer the world's best oils, filters & more!

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 (1989 GMC Trucks Suburban with engine code [N]) 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 1989 GMC Trucks Suburban with engine code [N] hide.
Product Availability Listing This guide lists all available AMSOIL & substitute brand products that meet or exceed OEM (GMC 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 1989 GMC Trucks Suburban engine code [N] was last updated on 30th July 2018 hide.

     

1. Engine Oil

   Grade 1  »  API*
   

   Maximum Performance Signature Series 10W-30 Synthetic Motor Oil (ATMQT)

   Performance Plus XL 10W-30 Synthetic Motor Oil (XLTQT)

   Performance OE 10W-30 Synthetic Motor Oil (OETQT)

   Above 0 F  »  10W-30 [1]
   Above 39 F  »  30 [2]
   Below 61 F  »  5W-30
   

2. Automatic Transmission

   Automatic Transmission, THM400  »  AF6 [3]

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

   ---

   Automatic Transmission, THM700-R4  »  AF6 [3]

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

3. Transfer Case

   Transfer Case, BW1370/4401  »  GLS37

   Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid (ATF) (ATFQT)
   OE Multi-Vehicle Synthetic Automatic Transmission Fluid (OTFQT)
   Torque-Drive Synthetic Transmission Fluid (ATD1G)
   

   ---

   Transfer Case, BW4470  »  GLS37

   Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid (ATF) (ATFQT)
   OE Multi-Vehicle Synthetic Automatic Transmission Fluid (OTFQT)
   Torque-Drive Synthetic Transmission Fluid (ATD1G)
   

   ---

   Transfer Case, NP205  »  GLS37

   Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid (ATF) (ATFQT)
   OE Multi-Vehicle Synthetic Automatic Transmission Fluid (OTFQT)
   Torque-Drive Synthetic Transmission Fluid (ATD1G)
   

   ---

   Transfer Case, NP241/NP243  »  GLS37

   Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid (ATF) (ATFQT)
   OE Multi-Vehicle Synthetic Automatic Transmission Fluid (OTFQT)
   Torque-Drive Synthetic Transmission Fluid (ATD1G)
   

4. Front Differential

   Standard Differential, Front  »  GL-5

   All TEMPS  »  80W-90
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Synthetic 75W90 Gear Lube (SVGPK)
   Severe Gear® 75W-110 (SVTQT)
   

5. Rear Differential

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

   All TEMPS  »  80W-90 [4]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Synthetic 75W90 Gear Lube (SVGPK)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 8.5 RG  »  GL-5

   All TEMPS  »  80W-90 [4]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Synthetic 75W90 Gear Lube (SVGPK)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 10.5 RG  »  GL-5

   All TEMPS  »  80W-90 [4]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Synthetic 75W90 Gear Lube (SVGPK)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 9.75 RG  »  GL-5

   All TEMPS  »  80W-90 [4]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Synthetic 75W90 Gear Lube (SVGPK)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 9.5 RG  »  GL-5

   All TEMPS  »  80W-90 [4]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Synthetic 75W90 Gear Lube (SVGPK)
   Severe Gear® 75W-110 (SVTQT)
   

   ---

   Differential, Rear W/ 12.25 RG  »  GL-5

   All TEMPS  »  80W-90 [4]
   SAE 80W-90 Synthetic Gear Lube (AGLQT)
   Synthetic 75W90 Gear Lube (SVGPK)
   Severe Gear® 75W-110 (SVTQT)
   

6. Power Steering Fluid

   Power Steering Fluid  »  PS003

   Power Steering Fluid (PSFCN)
   

7. Brake Fluid

   Brake Fluid  »  HB

   DOT 3 and 4 Brake Fluid (BFLVCN) [5]
   

8. Clutch Fluid

   Clutch Fluid  »  HB

   DOT 3 and 4 Brake Fluid (BFLVCN) [5]
   

9. Lubricants & Fluids Comments  »  [*]

   [1] SAE 10W-30 is preferred.
   [2] Use only if the other recommended viscosities are not
   available.
   [3] This specification has been updated from Dexron II or III to
   Dexron VI per a Technical Service Bulletin from the
   manufacturer
   [4] In Canada use 80W.
   [5] Hydraulic Brake Fluid, DOT 3. Original recommendation
   P/N 12377967 has been replaced by P/N 19299818.
   
   

10. Fluid Capacities (drive train fluids)

    Engine, with filter  »  7 quarts [1]
    Cooling System, With AC Initial Fill  »  24.8 quarts
    Passenger Car & Light Truck Antifreeze & Coolant
    AMSOIL Antifreeze and Engine Coolant
    Cooling System, Without AC Initial Fill  »  22.7 quarts
    Passenger Car & Light Truck Antifreeze & Coolant
    AMSOIL Antifreeze and Engine Coolant
    Automatic Transmission, THM400 Initial Fill  »  4.3 quarts
    Automatic Transmission, THM700-R4 Initial Fill  »  5 quarts
    Automatic Transmission, Total Fill
    3 speed THM400  »  10.6 quarts
    4 speed THM700-R4  »  11.5 quarts
    Differential, Front  »  4 pints
    Differential, With 10.5 RingGear Dana Rear  »  5.5 pints
    Differential, With 10.5 RingGear Rear  »  7.2 pints
    Differential, With 12.25 RingGear Rear  »  13.9 pints
    Differential, With 8.5 RingGear Rear  »  4.2 pints
    Differential, With 9.5 RingGear Rear  »  5.5 pints
    Differential, With 9.75 RingGear Rear  »  5.5 pints
    Transfer Case, NP205  »  5.1 pints [2]
    Transfer Case, BW4470  »  6.6 pints
    Transfer Case, BW1370/4401  »  3.2 pints [3]
    Transfer Case, NP241/NP243  »  4.4 pints
    ANTPC ANT ANTPC ANT
    Capacities Comments
    [1] After refill check oil level.
    [2] With NP205 fill no higher than 1 inch below filler plug.
    [3] Identification: check tag on case.
    

11. Chassis Lubrication

    4WD
    7-14 Fittings, 0 Plugs  »  LB
    Synthetic Multi-Purpose Grease NLGI #2 (GLC3P)
    Synthetic Water Resistant Grease (GWR3P)
    DOMINATOR® Synthetic Racing Grease (GRGCR)
    RWD
    8-12 Fittings, 0 Plugs  »  LB
    Synthetic Multi-Purpose Grease NLGI #2 (GLC3P)
    Synthetic Water Resistant Grease (GWR3P)
    DOMINATOR® Synthetic Racing Grease (GRGCR)
    

12. Torque Specifications

    Oil Drain Plug  »  20 ft/lbs
    Transfer Case NP205
    Fill Plug 40 ft/lbs
    Drain Plug 40 ft/lbs
    
    Transfer Case NP241
    Fill Plug 35 ft/lbs
    Drain Plug 35 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 51061 Oil Filter
   Air Filter	WIX 46220 Air Filter	[1]
   Air Filter	WIX 46166 Air Filter	[2]
   Air Filter	WIX 42098 Air Filter	[3]
   Fuel Filter	WIX 33481 Fuel Filter
   Transmission Filter	WIX 58881 Auto Tran Filter

   
   Filter Comments
   [1] 5 1/2 inch Tall
   [2] Heavy Duty Wrapped Version - 5 1/2 inch Height
   [3] 3 1/2 inch Tall
   

2. Gasoline Engine Fuel Additives

   Dominator Octane Boost (AOB)

   Dominator Octane Boost (AOB)
   
   Maximizes power and improves performance in all two-cycle and four-cycle gasoline engines. Reduces engine knock, improves ignition and engine response, helps fuel burn cleaner and inhibits corrosion. Recommended for off-road and racing use. Packag...

   
   Gasoline Stabilizer (AST)

   Gasoline Stabilizer (AST)
   
   AMSOIL Gasoline Stabilizer (AST) reduces the oxidation process that occurs when fuel is stored for extended periods, improving performance, extending equipment life and decreasing maintenance expenses. Package sizes include: 16-oz. Bottle ...

   
   P.I Performance Improver (API)

   P.I Performance Improver (API)
   
   P.i. improves fuel mileage an average of 2.3% and up to 5.7%. Reduces emissions such as hydrocarbons (HC) up to 15%, carbon monoxide (CO) up to 26% and nitrous oxides (NOx) up to 17%. Restores power and performance. Reduces the need for costly higher...

   
   

Close Panels

10W-30 Signature Series Synthetic Motor Oil (ATM)

The Top Tier of AMSOIL Synthetic Motor Oil. AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. Engineered for enthusiasts seeking maximum protection and performance. Precision-f...

10W-30 Extended Life Synthetic Motor Oil (XLT)

• AMSOIL Extended-Life Synthetic Motor Oil has 37% more cleaning power 1 to help keep your engine running smoother, longer. • Protection Against LSPI • Save Time and Money with up to 20,000 Miles (32,000 km) Of Gu...

10W-30 OE Series Synthetic Motor Oil (OET)

OE Synthetic Motor Oil is for mechanics and drivers seeking peace of mind protection and exceptional value in synthetic motor oil. It delivers 100 percent synthetic engine protection for advanced automotive technology, including turbochargers and dir...

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...

Signature Series Multi-Vehicle Synthetic ATF

AMSOIL Signature Series Multi-Vehicle Synthetic ATF is engineered to outperform conventional automatic transmission fluids and exceed the performance requirements of most North American, European and Asian vehicles. This sophisticated formulation pro...

OE Multi-Vehicle 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...

Torque-Drive Transmission Fluid (ATD)

Formulated for Allison TES-295, TES-389, TES-668, C-4; Ford MERCON V; GM DEXRON III-H and more. Engineered for outstanding performance in heavy-duty transmissions manufactured by Allison, Voith, ZF and other heavy-duty transmissions. Excellent pro...

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 & Racing Air Filters

WIX panel element air filters have a linear path through the filter for low airflow restriction & an exclusive pocket pleat for the filter media. Radial air filters are constructed of mesh screen on the inside wall diameter for element strength and media protection from backfire.

WIX Automotive, Light Truck and Racing Fuel Filters

WIX Fuel Filters provide an unmatched fuel cleansing performance. They prevent pump wear, injector clogging, premature engine wear and help boost fuel efficiency. Offer quick, easy filter replacement, long life and the possibility of extended service intervals.

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.