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1991 Buick Century OilsR.Us - Only the Best!



Oils & FiltersMaintenance ScheduleService BulletinRecallsImages
1991 Buick Century
2.5L 4-cyl Engine Code [R] Engine Code [R]
110 bhp. @ 5200 rpm / Torque: 135 ft. lbs. @ 3200 rpm
2.5L - Inline 4-cyl (Gasoline)

We know your Buick Century
& 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 (1991 Buick Century with engine code [R]) 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 Buick Century with engine code [R] hide.
Product Availability Listing This guide lists all available AMSOIL & substitute brand products that meet or exceed OEM (Buick) 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 Buick Century engine code [R] was last updated on 24th July 2019 hide.
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  1. Engine Oil

    Grade 1  »  API*
    Above 0 F  »  10W-30
    Above 39 F  »  30 [1]
    All TEMPS  »  5W-30
  2. Automatic Transmission

  3. Power Steering Fluid

    Power Steering Fluid  »  PS003

    Power Steering Fluid (PSFCN)
  4. Brake Fluid

    Brake Fluid  »  HB

    DOT 3 and 4 Brake Fluid (BFLVCN) [3]
  5. Lubricants & Fluids Comments  »  [*]

    [1] Use only if the other recommended viscosities are not
    available.
    [2] This specification has been updated from Dexron II or III to
    Dexron VI per a Technical Service Bulletin from the
    manufacturer
    [3] Hydraulic Brake Fluid, DOT 3. Original recommendation
    P/N 12377967 has been replaced by P/N 19353126.

  6. Fluid Capacities (drive train fluids)

    Engine, with filter  »  4.5 quarts [1]
    Cooling System, Initial Fill  »  10 quarts
    Passenger Car & Light Truck Antifreeze & Coolant
    AMSOIL Antifreeze and Engine Coolant
    Automatic Transmission, THM440-T4 Initial Fill  »  6 quarts
    Automatic Transmission, THM125C Initial Fill  »  4 quarts
    Automatic Transmission, Total Fill
    4 speed THM440-T4  »  8 quarts
    3 speed THM125C  »  7 quarts
    ANTPC ANT
    Capacities Comments
    [1] After refill check oil level.
  7. Chassis Lubrication

  8. Torque Specifications

    Oil Drain Plug  »  25 ft/lbs [1]

    Torque Specification Comments
    [1] Tighten large plug that retains filter finger tight, then
    rotate 1/4 turn in.

Close Panels

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

    Oil Filter WIX 51630 Oil Filter  
    Air Filter WIX 46036 Air Filter  
    Fuel Filter WIX 33487 Fuel Filter  
    Transmission Filter WIX 58952 Trans Filter  
    Oil Vapor Filter WIX 46990 Crankcase Filter  
  2. Gasoline Engine Fuel Additives

    Dominator Octane Boost (AOB)
    AOBDominator 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)
    ASTGasoline 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)
    APIP.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

ASL5W-30 Signature Series Synthetic Motor Oil (ASL)

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...
XLF5W-30 Extended Life Synthetic Motor Oil (XLF)

AMSOIL XL Synthetic Motor Oil is the choice for those who want to do something extra for their vehicle. Its boosted formulation delivers extra cleaning power, outstanding wear control, excellent high and low temperature protection and exceptional fue...
OEF5W-30 OE Series Synthetic Motor Oil (OEF)

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...
ATLSignature 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 ...
OTLOE 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...
BFLVDOT 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...
PSFMulti-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....
GLCSynthetic 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...
GWRSynthetic 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...
GRGDOMINATOR 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...
ANTPCPassenger 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...
ANTAntifreeze 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...

Maintenance Schedule as Provided by OEM Documentation

Distance:
7,500 miles (12,000 km)
Action:
Torque
Item:
Throttle body
Interval in Month(s):
0
Labor Units:
0.05
Parts Units:
0
Drive Type:
ALL
Description: The large diameter valve used to control the volume of incoming air to the engine.
Distance:
7,500 miles (12,000 km)
Action:
Lubricate
Item:
Chassis
Interval in Month(s):
12
Labor Units:
0.2
Parts Units:
0
Drive Type:
ALL
Description: The frame of a vehicle to which the body attaches.
Distance:
7,500 miles (12,000 km)
Action:
Inspect/rotate
Item:
Wheels & tires
Interval in Month(s):
0
Labor Units:
0.3
Parts Units:
0
Drive Type:
ALL
Description: A circular frame of hard material that may be solid or partly solid, is capable of turning on an axle, and holds the rubber cushion that contains compressed air.
Distance:
7,500 miles (12,000 km)
Action:
Change
Item:
Engine oil
Interval in Month(s):
12
Labor Units:
0.18
Parts Units:
4.5
Drive Type:
ALL
Description: A substance that lubricates and cools the moving parts of the engine and reduces corrosion and the formation of rust.
Distance:
7,500 miles (12,000 km)
Action:
Replace
Item:
Oil filter
Interval in Month(s):
12
Labor Units:
0.1
Parts Units:
1
Drive Type:
ALL
Description: A cartridge-filled canister placed in an engine's lubricating system to strain dirt and abrasive materials out of the oil.
Distance:
22,500 miles (36,000 km)
Action:
Inspect/rotate
Item:
Wheels & tires
Interval in Month(s):
0
Labor Units:
0.3
Parts Units:
0
Drive Type:
ALL
Description: A circular frame of hard material that may be solid or partly solid, is capable of turning on an axle, and holds the rubber cushion that contains compressed air.
Distance:
30,000 miles (48,000 km)
Action:
Inspect
Item:
Drive belt(s)
Interval in Month(s):
0
Labor Units:
0.03
Parts Units:
0
Drive Type:
ALL
Description: A belt that transfers the rotation of the engine through the crankshaft pulley to drive various devices, such as the alternator, water pump, air conditioning compressor or power steering pump.
Distance:
30,000 miles (48,000 km)
Action:
Inspect
Item:
Fuel tank, cap & lines
Interval in Month(s):
0
Labor Units:
0.05
Parts Units:
0
Drive Type:
ALL
Description: A reservoir for the vehicle's fuel.
Distance:
30,000 miles (48,000 km)
Action:
Inspect
Item:
EGR system
Interval in Month(s):
30
Labor Units:
0.1
Parts Units:
0
Drive Type:
ALL
Description: Exhaust Gas Recirculation system. A device that redirects a small amount of exhaust to the engine intake in an effort to lower combustion temperature and reduce the emission of nitrogen oxide.
Distance:
30,000 miles (48,000 km)
Action:
Inspect
Item:
PCV valve
Interval in Month(s):
30
Labor Units:
0.05
Parts Units:
0
Drive Type:
ALL
Description: Positive Crankcase Ventilation valve, an emissions related device that allows venting of combustion gases from the crankcase to the intake system rather than the atmosphere.
Distance:
30,000 miles (48,000 km)
Action:
Inspect
Item:
Spark plug wires
Interval in Month(s):
30
Labor Units:
0.05
Parts Units:
0
Drive Type:
ALL
Description: Cables that carry a high-voltage electrical charge the spark plug(s).
Distance:
30,000 miles (48,000 km)
Action:
Replace
Item:
Air filter
Interval in Month(s):
0
Labor Units:
0.2
Parts Units:
1
Drive Type:
ALL
Description: A device that filters incoming air fed to the engine.
Distance:
30,000 miles (48,000 km)
Action:
Flush/replace
Item:
Coolant
Interval in Month(s):
24
Labor Units:
0.7
Parts Units:
1
Drive Type:
ALL
Description: Also known as "antifreeze." A mixture of water and ethylene glycol that has both a higher boiling point and a lower freezing point than plain water.
Distance:
30,000 miles (48,000 km)
Action:
Replace
Item:
Spark plugs
Interval in Month(s):
30
Labor Units:
0.5
Parts Units:
4
Drive Type:
ALL
Description: Cables that carry a high-voltage electrical charge from the distributor cap or ignition coils to the spark plugs.
Distance:
37,500 miles (60,000 km)
Action:
Inspect/rotate
Item:
Wheels & tires
Interval in Month(s):
0
Labor Units:
0.3
Parts Units:
0
Drive Type:
ALL
Description: A circular frame of hard material that may be solid or partly solid, is capable of turning on an axle, and holds the rubber cushion that contains compressed air.
Distance:
100,000 miles (160,000 km)
Action:
Change
Item:
Automatic transmission fluid
Interval in Month(s):
100
Labor Units:
0.5
Parts Units:
4
Drive Type:
ALL
Description: The fluid used for lubricating and cooling an automatic transmission.
Distance:
100,000 miles (160,000 km)
Action:
Replace
Item:
Automatic transmission filter(s)
Interval in Month(s):
100
Labor Units:
0.3
Parts Units:
1
Drive Type:
ALL
Description: A component in most automatic transmissions that is fitted over the fluid intake, usually in the pan, that prevents debris and other contaminants from circulating throughout the transmission's inner workings and potentially causing unnecessary wear or damage. Some transmissions use a reusable metal or nylon mesh-type screen in place of a disposable filter.

Service Bulletin as Provided by OEM & NHTSA

Sorry no Service Bulletin found for this vehicle

Recall Data Provided by NHTSA

#
1
Make(s):
BUICK, CHEVROLET, OLDSMOBILE, PONTIAC
Model(s):
6000, CELEBRITY, CENTURY, CIERA, CUTLASS
Year(s):
1990, 1991
Manufacturer:
GENERAL MOTORS CORP.
NHTSA ID:
92V124000
Recall Date:
n/a
Units Affected:
319,181

Affected Component: Seats:front assembly:recliner.

Summary: The power seat or recliner wiring harness can be pinched or can chafe on the seat frame or spring support rod, wearing through the wire insulation and causing an electrical short. .

Conequence: The high current caused by the electrical short welds thecircuit breaker elements together in the closed position, leaving the circuitunprotected and generating sufficient heat to burn the wire insulation andignite the seat cushion material. .

Remedy: Repair any abraded wiring and reroute the wiring harness using a wiring harness clip. .

Notes: System: interior: seating. Vehicle description: passenger cars with 6 way power seats or power recliners. .

#
2
Make(s):
BUICK, CHEVROLET, OLDSMOBILE, PONTIAC
Model(s):
6000, CELEBRITY, CENTURY, CIERA, CUTLASS
Year(s):
1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Manufacturer:
GENERAL MOTORS CORP.
NHTSA ID:
95V173000
Recall Date:
n/a
Units Affected:
2,216,325

Affected Component: Seat belts:front:anchorage.

Summary: These vehicles were assembled with rear outboard safety belt anchorages that may not withstand the required load. This does not comply with fmvss no. 210, "seat belt assembly anchorages. ".

Conequence: Consequence of non-compliance: in a collison, stress can cause the attachment metal to tear and allow the anchorage to separate from the body of the vehicle. The safety belt may not protect an occupant in the event of a vehicle crash. .

Remedy: Dealers will replace the existing anchor bolts with a new shoulder bolt and thread locking adhesive. Additionally, noise control patches will be applied at each anchorage. .

Notes: System: interior; active restraints; belt anchor and attachment; fmvss no. 210. Vehicle description: passenger vehicles. Note: owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact buick at 1-800-521-7300; chevrolet at 1-800-222-1020; pontiac at 1-800-762-2737; or oldsmobile at 1-800-442-6537. Also contact the national highway traffic safety administration's auto safety hotline at 1-800-424-9393. .

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Blog Title: 1991 Buick Century (2.5L-[R]) OilsR.Us - World's Best Oils & Filters
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