1993 GMC Rally Camper Special Oil Type & Capacity
The 1993 GMC Rally Camper Special oil type depends on the engine: the 5.7 K takes 5W-30 (5.0 quarts qt with filter); the 6.2 J takes 5W-30 (7.0 quarts qt with filter); the 7.4 N takes 5W-30 (7.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- 5.7 K: 5W-30, 5.0 quarts with filter
- 6.2 J: 5W-30, 7.0 quarts with filter
- 7.4 N: 5W-30, 7.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 5.7 K — G3500,5.7L Eng | API - SAE 5W-30 (Below -0Deg.F to Above 100Deg.F) 10W-30 (0Deg.F to Above 100Deg.F, Light Duty Emissions), 5W-30 (Below -60Deg.F, Heavy Duty Emissions) 10W-30 (0Deg.F to Above 100Deg.F, Heavy Duty Emissions) | 5.00 QTS. | 4.00 QTS. | — |
| 5.7 K — G3500 | API - SAE 5W-30 (Below -0Deg.F to Above 100Deg.F, Light Duty Emissions), (Below -60Deg.F Heavy Duty Emissions) (10W-30 (0Deg.F to Above 100Deg.F) | 6.00 QTS. | — | — |
| 6.2 J — G3500,6.2L Eng | API - SAE 5W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), 30 (32Deg.F to Above 100Deg.F) | 7.00 QTS. | — | — |
| 6.2 J — G3500 | API - SAE 5W-30 (Below -0Deg.F to Above 100Deg.F, Light Duty Emissions), (Below -60Deg.F Heavy Duty Emissions) (10W-30 (0Deg.F to Above 100Deg.F) | 6.00 QTS. | — | — |
| 7.4 N — G3500,7.4L Eng | API - SAE 5W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), 30 (32Deg.F to Above 100Deg.F) | 7.00 QTS. | 6.00 QTS. | — |
| 7.4 N — G3500 | API - SAE 5W-30 (Below -0Deg.F to Above 100Deg.F, Light Duty Emissions), (Below -60Deg.F Heavy Duty Emissions) (10W-30 (0Deg.F to Above 100Deg.F) | 6.00 QTS. | — | — |
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More factory specs & repair guides for your Rally Camper Special
🛞 1993 GMC Rally Camper Special Tire Size & Pressure →🌧️ 1993 GMC Rally Camper Special Wiper Blade Sizes →💡 1993 GMC Rally Camper Special Light Bulb Sizes →📖 1993 GMC Rally Camper Special Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
17.0 quarts (16.08 L) — 56/44 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1993 GMC Rally Camper Special take?
It depends on the engine: 5.7 K uses 5W-30; 6.2 J uses 5W-30; 7.4 N uses 5W-30.
What is the oil capacity of a 1993 GMC Rally Camper Special?
Oil capacity depends on the engine: 5.7 K holds 5.0 quarts with filter; 6.2 J holds 7.0 quarts with filter; 7.4 N holds 7.0 quarts with filter.
How often should I change the oil in my 1993 GMC Rally Camper Special?
Most 1993 GMC Rally Camper Special owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — GMC recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1993 GMC Rally Camper Special?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1993 GMC Rally Camper Special. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.