Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1991 Audi 100 BaseFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Refrigerant | 2.38 LBS. | 1.07 KG | R-12 | S | |||
| Automatic Transmission Fluid | 2.3L Eng | 3.50 QTS. | 3.31 L | Automatic Transmission Fluid DEXRON for torque converter and Hypoid Oil SAE 90 (Mil-L-2105 B or API - GL- 5) for final drive | S | ||
| Brake Fluid | N/A | N/A | DOT 4 Brake Fluid | Fill between "max" and "min" lines on reservoir. | S | ||
| Engine Coolant | 2.3L Eng | 2.10 GALS. | 7.94 L | 50/50 mixture of Ethylene Glycol Antifreeze and water | Use Phosphate-free Antifreeze. | S | |
| Engine Oil | w/Filter | 5.00 QTS. | 4.73 L | API - SAE 5W-20/30 (Below -15Deg.F to 20Deg.F), 10W-30/40 (-5Deg.F to 65Deg.F), 15W-40/50 (10Deg.F to Above 85Deg.F), 20W-40/50 (15Deg.F to Above 85Deg.F) | S | ||
| Engine Oil | w/o Filter | 4.50 QTS. | 4.25 L | API - SAE 5W-20/30 (Below -15Deg.F to 20Deg.F), 10W-30/40 (-5Deg.F to 65Deg.F), 15W-40/50 (10Deg.F to Above 85Deg.F), 20W-40/50 (15Deg.F to Above 85Deg.F) | S | ||
| Fuel Tank | 20.60 GALS. | 77.97 L | Reserve tank capacity: 3.2 gals. | S | |||
| Manual Transmission Fluid | 2.50 QTS. | 2.36 L | Synthetic Transmission Fluid G 50, SAE 75W-90 (Mil-L-2105) or API - GL-4) | S | |||
| Power Steering Fluid | N/A | N/A | Audi Hydraulic Oil | Part No. G 002 000 or equivalent. | S | ||
| Windshield Washer Fluid | 5.60 QTS. | 5.29 L | S | ||||
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.