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.
1990 Jeep Wrangler Laredo, AutomaticFACTORY 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 | 8.00 QTS. | 7.57 L | Automatic Transmission Fluid Plus Type 7176 | S | |||
| Brake Fluid | N/A | N/A | DOT 3 Brake Fluid | Fill to line on reservoir. | S | ||
| Differential Gear Oil | 2.50 PTS. | 1.18 L | API - GL-5, SAE 75W-90 Gear Oil | With towing package: SAE 80W-140. | S | ||
| Engine Coolant | 4.2L Eng | 10.50 QTS. | 9.93 L | 50/50 mixture of All Season Coolant and water | Includes: 1 qt. in coolant reserve tank. | S | |
| Engine Oil | 4.2L Eng | 6.00 QTS. | 5.67 L | API - SAE 5W-30 (-20Deg.F to 60Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | Use oil that has been certified by the American Petroleum Institute. | S | |
| Fuel Tank | Optional | 20.00 GALS. | 75.7 L | S | |||
| Fuel Tank | Standard | 15.00 GALS. | 56.78 L | S | |||
| Manual Transmission Fluid | 4.2L Eng | 3.40 QTS. | 3.21 L | API - GL-5, SAE 75W-90 Gear Oil | Fill to the level of the filler plug hole. | S | |
| Power Steering Fluid | N/A | N/A | Power Steering Fluid | S | |||
| Transfer Case Fluid | 3.25 PTS. | 1.53 L | Automatic Transmission Fluid Type 7176 (Preferred) or Automatic Transmission Fluid DEXRON II | S | |||
| Windshield Washer Fluid | N/A | N/A | Windshield Antifreeze | Not radiator antifreeze. For further details see "Air conditioner specification label". | S | ||
Factory Service Tools
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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.
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