1993 GMC Suburban Oil Type & Capacity
The 1993 GMC Suburban oil type depends on the engine: the C1500 takes 10W-30 (5.0 quarts qt with filter); the C2500, 5.7 K takes 10W-30 (5.0 quarts qt with filter); the C2500, 7.4 N takes 10W-30 (7.0 quarts qt with filter); the K1500 takes 10W-30 (5.0 quarts qt with filter); the K2500, 5.7 K takes 10W-30 (5.0 quarts qt with filter); the K2500, 7.4 N takes 10W-30 (7.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- C1500: 10W-30, 5.0 quarts with filter
- C2500, 5.7 K: 10W-30, 5.0 quarts with filter
- C2500, 7.4 N: 10W-30, 7.0 quarts with filter
- K1500: 10W-30, 5.0 quarts with filter
- K2500, 5.7 K: 10W-30, 5.0 quarts with filter
- K2500, 7.4 N: 10W-30, 7.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| C1500 — 5.7L Eng | 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) | 5.00 QTS. | 4.00 QTS. | — |
| C2500, 5.7 K — 5.7L Eng | 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) | 5.00 QTS. | 4.00 QTS. | — |
| C2500, 7.4 N — 7.4L Eng | 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) | 7.00 QTS. | 6.00 QTS. | — |
| K1500 — 5.7L Eng | 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) | 5.00 QTS. | 4.00 QTS. | — |
| K2500, 5.7 K — 5.7L Eng | 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) | 5.00 QTS. | 4.00 QTS. | — |
| K2500, 7.4 N — 7.4L Eng | 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) | 7.00 QTS. | 6.00 QTS. | — |
More factory specs & repair guides for your Suburban
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Coolant capacity
18.0 quarts (17.03 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 Suburban take?
It depends on the engine: C1500 uses 10W-30; C2500, 5.7 K uses 10W-30; C2500, 7.4 N uses 10W-30; K1500 uses 10W-30; K2500, 5.7 K uses 10W-30; K2500, 7.4 N uses 10W-30.
What is the oil capacity of a 1993 GMC Suburban?
Oil capacity depends on the engine: C1500 holds 5.0 quarts with filter; C2500, 5.7 K holds 5.0 quarts with filter; C2500, 7.4 N holds 7.0 quarts with filter; K1500 holds 5.0 quarts with filter; K2500, 5.7 K holds 5.0 quarts with filter; K2500, 7.4 N holds 7.0 quarts with filter.
How often should I change the oil in my 1993 GMC Suburban?
Most 1993 GMC Suburban 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 Suburban?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1993 GMC Suburban. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.