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.
1998 Chevrolet C3500 HD 7.4 J, StandardFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Refrigerant | 7.4L Eng | 2.63 LBS. | 1.19 KG | R-12 | S | ||
| Automatic Transmission Fluid | Drain and Refill | 5.00 QTS. | 4.73 L | Automatic Transmission Fluid DEXRON IIE | S | ||
| Automatic Transmission Fluid | Overhaul | 11.50 QTS. | 10.88 L | Automatic Transmission Fluid DEXRON IIE | S | ||
| Brake Fluid | N/A | N/A | DOT 3 Brake Fluid | S | |||
| Engine Coolant | 7.4L Eng | w/Air Cond | 28.50 QTS. | 26.97 L | 50/50 mixture of DEX-COOL and clean water (preferably distilled) | S | |
| Engine Coolant | 7.4L Eng | w/o Air Cond | 26.50 QTS. | 25.07 L | 50/50 mixture of DEX-COOL and clean water (preferably distilled) | S | |
| Engine Oil | 7.4L Eng | w/Filter | 8.00 QTS. | 7.57 L | API - SAE 10W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), SAE 30 (Above 32Deg.F to Above 100Deg.F) | S | |
| Engine Oil | 7.4L Eng | w/o Filter | 7.00 QTS. | 6.62 L | API - SAE 10W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), SAE 30 (Above 32Deg.F to Above 100Deg.F) | S | |
| Fuel Tank | Optional | 32.00 GALS. | 121.13 L | S | |||
| Fuel Tank | Standard | 21.00 GALS. | 79.49 L | S | |||
| Manual Transmission Fluid | 4.00 QTS. | 3.78 L | GM Manual Transmission Synthetic Fluid 12345871 | S | |||
| Power Steering Fluid | N/A | N/A | GM Power Steering Fluid | GM Part No. 1050017. | S | ||
| Windshield Washer Fluid | N/A | N/A | Optikleen Windshield Washer Fluid | Follow the Manufacturer's Instructions for the mixture ratio. | H | ||
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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