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 Ford Cutaway 7.3 MFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Refrigerant | N/A | N/A | R12 | For further details see "Air conditioner specification label". | S | ||
| Automatic Transmission Fluid | 7.3L Eng | 15.70 QTS. | 14.85 L | Automatic Transmission Fluid MERCON | S | ||
| Differential Gear Oil | Model 61-1,Singel Rear Wheels | 5.80 PTS. | 2.74 L | Premium Rear Axle Gear Oil | S | ||
| Differential Gear Oil | Model 70-10,Dual Rear Wheels | 6.60 PTS. | 3.12 L | Premium Rear Axle Gear Oil | S | ||
| Engine Coolant | 7.3L Eng | 26.00 PTS. | 12.3 L | 50/50 mixture of FORD Premium Cooling System Fluid and water | Add 1 qt. for heater, add 1.8 qts. for auxiliary heater. | S | |
| Engine Oil | 7.3L Eng | w/Filter | 10.00 QTS. | 9.46 L | SAE 15W-40 Super Duty (Normal Operation), SAE 30 Single Weight Super Duty (Severe Operation) | S | |
| Engine Oil | 7.3L Eng | w/o Filter | 9.00 QTS. | 8.51 L | SAE 15W-40 Super Duty (Normal Operation), SAE 30 Single Weight Super Duty (Severe Operation) | S | |
| Fuel Tank | 7.3L Eng | 36.00 GALS. | 136.27 L | 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.