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Home Product Cross Reference Audi 90 1991 2.3L (Engine Code [C] NG)

World's Best Oils & Filters for 1991 Audi 90

Oils & FiltersMaintenance ScheduleService BulletinRecalls
1991 Audi 90
2.3L 5-cyl Engine Code [C] Engine Code [C] NG
130 bhp. @ 5500 rpm / Torque: 140 ft. lbs. @ 4500 rpm
2.3L - Inline 5-cyl (Gasoline)
Compression Ratio: 10:1

We know your Audi 90
& We have 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 Audi 90 with engine code [C]) 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 Audi 90 with engine code [C] hide.
 Product Availability Listing This guide lists all available AMSOIL & substitute brand products that meet or exceed OEM (Audi) 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 Audi 90 engine code [C] was last updated on 11th September 2018 hide.
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  1. Engine Oil

    Grade 1  »  SJ
    Performance Plus XL 10W-40 Synthetic Motor Oil (XLOQT)
    Maximum Performance Premium Protection 10W-40 Synthetic Motor Oil (AMOQT)
    European Car Formula 5W-40 Improved ESP Synthetic Motor Oil (AFLQT)
    -10 To 10C  »  20W-20
    -18 To 16C  »  10W-30, 10W-40
    0 To 30C  »  30
    Above -10C  »  20W-40, 20W-50
    Above -15C  »  15W-40, 15W-50
    Above 20C  »  40
    Below -10C  »  5W-20, 5W-30
    Below -4C  »  10W

  2. Manual Transmission

    Manual Transmission, 012 (5-SPD)  »  SL148

    All TEMPS  » 
    Manual Transmission & Transaxle Gear Lube 75W-90 (MTGQT)

  3. Automatic Transmission

    Automatic Transmission, 097  »  AF2 [1]

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

    Automatic Transmission, 087  »  AF2 [1]

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

    Automatic Transmission, 089  »  AF2 [1]

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

  4. Front Differential

    Differential, Front W/ AT  »  GLSC8 [2]

    All TEMPS  » 
    75W-90 Long Life Synthetic Gear Lube (FGRQT)

  5. Power Steering Fluid

    Power Steering Fluid  »  PS023

    Power Steering Fluid (PSFCN)

  6. Brake Fluid

    Brake Fluid  »  HBH

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

  7. Clutch Fluid

    Clutch Fluid  »  HBH

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

  8. Lubricants & Fluids Comments  »  [*]

    [1] Verify fluid before topping off. DEXRON II could have been
    replaced with Esso Type LT 71141, P/N G 052 162 (-A1, -A2,
    -A6) which is clear-yellow in color.
    [2] Audi/VW Part number G 052 145 A1 (500 ml), G 052 145 A2
    (1 l), G 052 145 S2 (1 l). Note that G 052 145 A2 was
    superseded by the manufacturer with the G 052 145 S2.
    [3] Hydraulic Brake Fluid, DOT 4 P/N B 000 750 M3

  9. Capacities (Drive Train Fluids)

    Engine, with filter  »  4 liters [1]
    Cooling System, Initial Fill  »  8 liters
    Passenger Car & Light Truck Antifreeze & Coolant
    AMSOIL Antifreeze and Engine Coolant
    Automatic Transmission, 097 Initial Fill  »  3 liters [2]
    Automatic Transmission, 089 Initial Fill  »  3 liters [2]
    Automatic Transmission, 087 Initial Fill  »  3 liters [2]
    Automatic Transmission, Total Fill
    3 speed 087  »  6 liters
    3 speed 089  »  6 liters
    4 speed 097  »  5.4 liters
    Manual Transmission, 012 (5-SPD)  »  2.4 liters
    Differential, With AT Front  »  1 liters [3]
    ANTPC ANT
    Capacities Comments
    [1] After refill check oil level.
    [2] Final drive is serviced separately.
    [3] Final drive for Automatic transmission only.

  10. Torque Specifications

    Oil Drain Plug  »  29 ft/lbs
    Manual Transmission
    Fill Plug 18 ft/lbs
    Drain Plug 18 ft/lbs

Close Panels

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

    Oil Filter 25, 000-Mile Ea Oil Filter (EAO34)  
    Oil Filter MANN Oil Filter (W7195)  
    Oil Filter WIX 51393 Oil Filter  
    Air Filter MANN Air Filter (C34109)  
    Air Filter WIX 42170 Air Filter  
    Fuel Filter MANN Fuel Filter (WK8341)  
    Fuel Filter WIX 33291 Fuel Filter  

  2. Gasoline Engine Fuel Additives

    Dominator Octane Boost (AOB)
    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)
    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)
    API P.I Performance Improver (API)

    • Restores up to 14% horsepower 1 • Restores GDI fuel injectors to 100% flow rate after one tank of fuel 2 • Improves fuel economy • Reduces need for costly higher-octane fuel

Close Panels

XLO 10W-40 Extended Life Synthetic Motor Oil (XLO)

*** Not Available in Canada *** • 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 wi...
AMO 10W-40 Premium Protection Motor Oil (AMO)

For use in both gasoline and diesel engines. Offers multi-functionality and wear protection. Ideal for applications where the extra protection of a higher-viscosity oil is desired. Excellent for motor homes and older vehicles, as well as many types o...
AFL 5W-40 MS European Motor Oil (AFL)

Specially Formulated for European Gasoline and Diesel Engines. AMSOIL Synthetic European Motor Oil provides exceptional performance and protection for gasoline and diesel European vehicles. It meets a wide variety of specifications and carries multip...
MTG 75W-90 (GL-4) Synthetic Gear Lube (MTG)

AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube (MTG) is a premium blend of the finest synthetic base oils and advanced, high-performance additives. It is formulated specifically for maximum protection in the most demanding manual trans...
ATF 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...
OTF 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...
FGR 75W-90 Semi-Truck Gear Lube (FGR)

Specifically engineered for extended drain intervals up to 500,000 miles as set by equipment manufacturers for over-the-road trucks and heavy equipment. Provides long life in passenger cars and trucks. Protects against wear and improves equipment li...
BFLV 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...
PSF 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....
ANTPC 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...
ANT 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 oil filter 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.
mann oil filter MANN-FILTERS Oil Filters

Oil filters from MANN-FILTER purify oil of dirt and solid particles such as dust, abraded metal, carbon deposits and soot particles. The filter housing is pressure-resistant, protected against corrosion and features a long-life elastomer seal. Use Part Number drop down to select filter.

Maintenance Schedule as Provided by OEM Documentation

Distance:
7,500 miles (12,000 km)		 Action:
Check operation		 Item:
Starter safety switch		 Interval in Month(s):
Labor Units:
0.05		 Parts Units:
0		 Drive Type:
ALL
Description: An electrical switch that prevents the starter from being engaged unless certain conditions are met, such as shifter placement or brake pedal depression.
Distance:
7,500 miles (12,000 km)		 Action:
Inspect		 Item:
Auto shift lock/starter safety switch		 Interval in Month(s):
Labor Units:
0.05		 Parts Units:
0		 Drive Type:
ALL
Description: A device that prevents the starter from functioning unless the shifter is in the park or neutral position, and prevents the shifter from being moved unless the brake pedal is depressed.
Distance:
7,500 miles (12,000 km)		 Action:
Change		 Item:
Engine oil		 Interval in Month(s):
Labor Units:
0.15		 Parts Units:
3.7		 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):
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:
15,000 miles (24,000 km)		 Action:
Check		 Item:
On-board diagnosis system		 Interval in Month(s):
Labor Units:
0.2		 Parts Units:
0		 Drive Type:
ALL
Description: A computer-controlled system that identifies malfunctioning or out-of-adjustment components under its control through the display of trouble codes. The presence of trouble codes is usually indicated by an intermittently or constantly lit "check engine " or "service engine soon" light.
Distance:
15,000 miles (24,000 km)		 Action:
Check for leaks		 Item:
Engine		 Interval in Month(s):
Labor Units:
0.1		 Parts Units:
0		 Drive Type:
ALL
Description: A machine that burns fuel and converts the resulting heat into mechanical energy.
Distance:
15,000 miles (24,000 km)		 Action:
Check level		 Item:
Power steering fluid		 Interval in Month(s):
Labor Units:
0.02		 Parts Units:
0		 Drive Type:
ALL
Description: Hydraulic fluid used in a power steering system.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect		 Item:
Air conditioning system		 Interval in Month(s):
Labor Units:
0.1		 Parts Units:
0		 Drive Type:
ALL
Description: The system of receiver/dryer, evaporator, condenser, compressor, refrigerant lines, controls and valves that allow for the controlled refrigeration of the air present in or entering a vehicle's interior.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect		 Item:
Brake rotors		 Interval in Month(s):
Labor Units:
0.2		 Parts Units:
0		 Drive Type:
ALL
Description: Rotating discs mounted to the front and/or rear spindles and axles, which brake pads clamp to when the brake pedal is depressed to slow/stop the vehicle.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect		 Item:
Brake system		 Interval in Month(s):
Labor Units:
0.4		 Parts Units:
0		 Drive Type:
ALL
Description: A vehicle's stopping mechanism comprised of a pedal connected to a hydraulic master cylinder that can actuate clamping and/or expanding devices at all four wheels that slow or stop a vehicle's rolling motion. Components in a basic brake system are the master cylinder, calipers and/or wheel cylinders, linings or pads or shoes, rotors and/or drums.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect		 Item:
Brakes, front		 Interval in Month(s):
Labor Units:
0.1		 Parts Units:
0		 Drive Type:
ALL
Description: A vehicle's stopping mechanism comprised of a pedal connected to a hydraulic master cylinder that can actuate clamping and/or expanding devices at all four wheels that slow or stop a vehicle's rolling motion. Also used to refer to the brake system's most frequently replaced parts, brake pads and/or brake shoes.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect		 Item:
Cooling system		 Interval in Month(s):
Labor Units:
0.1		 Parts Units:
0		 Drive Type:
ALL
Description: The system that stores and circulates coolant throughout (water cooled) engines to prevent overheating. Some vehicles have air-cooled engines in which high-speed airflow is sufficient to keep the engine cool.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect		 Item:
Drive axles		 Interval in Month(s):
Labor Units:
0.1		 Parts Units:
0		 Drive Type:
ALL
Description: In a front-wheel drive vehicle or a rear-wheel drive vehicle with independent rear suspension, the short axles that connect the driven wheels with the driving force. Drive axles typically have CV (constant velocity)-joints on their ends.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect		 Item:
Exhaust system		 Interval in Month(s):
Labor Units:
0.05		 Parts Units:
0		 Drive Type:
ALL
Description: A system of tubing that routes exhaust gases from the exhaust manifold to the rear of the car and into the air. The exhaust system includes catalytic converters and mufflers that help reduce air and noise pollution generated by an engine.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect		 Item:
Steering		 Interval in Month(s):
Labor Units:
0.1		 Parts Units:
0		 Drive Type:
ALL
Description: The collection of components that enable the operator to direct a vehicle in a desired direction.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect & lubricate		 Item:
Sunroof		 Interval in Month(s):
Labor Units:
0.1		 Parts Units:
0		 Drive Type:
ALL
Description: A retractable glass, metal or fabric hatch in a vehicle's roof. The glass hatch is often referred to as a moon roof.
Distance:
15,000 miles (24,000 km)		 Action:
Inspect for leaks		 Item:
Manual transmission		 Interval in Month(s):
Labor Units:
0.1		 Parts Units:
0		 Drive Type:
ALL
Description: A type of transmission that must be shifted by the operator.
Distance:
15,000 miles (24,000 km)		 Action:
Check/adjust		 Item:
Idle speed		 Interval in Month(s):
Labor Units:
0.15		 Parts Units:
0		 Drive Type:
ALL
Description: The RPM of the engine free from load (all accessories off), at normal operating temperature and in neutral (or, in the case of an automatic transmission, park or neutral).
Distance:
15,000 miles (24,000 km)		 Action:
Change		 Item:
Automatic transmission fluid		 Interval in Month(s):
Labor Units:
0.5		 Parts Units:
3.2		 Drive Type:
ALL
Description: The fluid used for lubricating and cooling an automatic transmission.
Distance:
30,000 miles (48,000 km)		 Action:
Inspect		 Item:
Ball joints & tie rod ends		 Interval in Month(s):
Labor Units:
0.05		 Parts Units:
0		 Drive Type:
ALL
Description: Lubricated parts of the steering and suspension systems, very similar in appearance, made up of a ball and socket that allow relatively friction-free movement.
Distance:
30,000 miles (48,000 km)		 Action:
Inspect/adjust		 Item:
Drive belt(s)		 Interval in Month(s):
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:
Replace		 Item:
Air filter		 Interval in Month(s):
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:
Replace		 Item:
Spark plugs		 Interval in Month(s):
Labor Units:
0.6		 Parts Units:
5		 Drive Type:
ALL
Description: Cables that carry a high-voltage electrical charge from the distributor cap or ignition coils to the spark plugs.
Distance:
30,000 miles (48,000 km)		 Action:
Replace		 Item:
Automatic transmission filter(s)		 Interval in Month(s):
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.
Distance:
30,000 miles (48,000 km)		 Action:
Flush/replace		 Item:
Brake fluid		 Interval in Month(s):
24		 Labor Units:
0.7		 Parts Units:
4		 Drive Type:
ALL
Description: The fluid used in the hydraulic brake system.
Distance:
60,000 miles (96,000 km)		 Action:
Replace		 Item:
Oxygen sensor		 Interval in Month(s):
Labor Units:
0.2		 Parts Units:
1		 Drive Type:
ALL
Description: In a computer-controlled, fuel-injected vehicle, a sensor mounted in the exhaust stream that relays air/fuel ratio information to the fuel control computer that allows the computer to make adjustments.

Service Bulletin as Provided by OEM & NHTSA

Bulletin Date:
1997-05-01		 Bulletin Number:
9705169704F		 NHTSA Item Number:
53613

Component Description: Fuel system, gasoline.

Service Bulletin Summary: Information obtaining the fluid capacity chart. ( nhtsa item number - 53613 ).
Bulletin Date:
2007-02-01		 Bulletin Number:
20056243		 NHTSA Item Number:
10022141

Component Description: Exterior lighting:headlights.

Service Bulletin Summary: Headlight aiming, using hella universal beamsetter. ( nhtsa item number - 10022141 ).
Bulletin Date:
2008-08-01		 Bulletin Number:
2015831		 NHTSA Item Number:
10026848

Component Description: (A) Engine and engine cooling:exhaust system., (B) Structure: frame and members:underbody shields.

Service Bulletin Summary: Volkswagen: exhaust heat shield, replacement guidelines. Heat shields are to be inspected after completion o any type of repair to the underbody (exhaust system transmission, etc. ), and if damaged, replaced. ( nhtsa item number - 10026848 ).
Bulletin Date:
2015-07-01		 Bulletin Number:
SB-01-15-29		 NHTSA Item Number:
10058584

Component Description: Engine (pws).

Service Bulletin Summary: Audi: engine, on some vehicles, would run irregularly or have malfunction indicator lamp (mil) on or possible filter element for camshaft adjustment valve can loosen and in oil circuit, there is no damage from loosened particles. Model al ( nhtsa item number - 10058584 ).

Recall Data Provided by NHTSA

#
1		 Make(s):
AUDI		 Model(s):
80, 90, 100, 200, 4000, 5000		 Year(s):
1985, 1986, 1987, 1988, 1989, 1990, 1991
Manufacturer:
VOLKSWAGEN OF AMERICA,INC		 NHTSA ID:
93V006000		 Recall Date:
n/a		 Units Affected:
152,000

Affected Component: Power train:axle assembly.

Summary: The differential oil of the transaxle is lost over time due to evaporation. Low oil levels cause premature bearing and gear wear and eventual failure of the differential. .

Conequence: In the event of failure, the vehicle's drive wheels couldlose power. In extreme circumstances, the front wheels lock, causing rapiddeceleration resulting in possible loss of vehicle control and an accident. .

Remedy: Drain and replace the differential gear oil with oil having higher performance characteristics. .

Notes: System: power train. Vehicle description: passenger cars with automatic 3-speed transmissions. .
#
2		 Make(s):
AUDI		 Model(s):
80, 90, 100, 200, COUPE, S4, V8		 Year(s):
1989, 1990, 1991, 1992, 1993
Manufacturer:
VOLKSWAGEN OF AMERICA,INC		 NHTSA ID:
97V172000		 Recall Date:
n/a		 Units Affected:
54,800

Affected Component: Air bags:frontal:sensor/control module-inactive.

Summary: Vehicle description: passenger vehicles. Some air bag sensors do not comply with audi's durability standards over the lifetime of the vehicle. .

Conequence: In the event the sensor should malfunction, the air bag restraint system can inadvertently deploy. Deployment of the air bag restraint system without warning could cause a driver to lose vehicle control. .

Remedy: Dealers will replace the air bag sensor control module. .

Notes: Owner notification began october 13, 1997. 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 audi at 1-800-822-2834. Also contact the national highway traffic safety administration's auto safety hotline at 1-800-424-9393. .

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Blog Title: World's Best Oils & Filters for 1991 AUDI 90 2.3L 5-cyl Engine Code [C] NG
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