1991 GMC Vandura Special Oil Type & Capacity
The 1991 GMC Vandura 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, Light Duty Emissions), (Below -60Deg.F Heavy Duty Emissions) 10W-30 (0Deg.F to Above 100Deg.F) | — | 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) | 5.00 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) | 5.00 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. | — | — |
| 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) | 5.00 QTS. | — | — |
Complete Oil Change Bundle for 1991 GMC Vandura Special
Everything you need delivered in one order. Pre-matched to your factory spec (5W-30, 5.0 quarts).
As an Amazon Associate we earn from qualifying purchases. Prices shown are real-time retail estimates.
Buy the right oil & filter for your Vandura Special
🛒 Buy 5W-30 Full Synthetic Oil (5.0 quarts needed) on AmazonPopular Full Synthetic Brands (5W-30):
As an Amazon Associate we earn from qualifying purchases made through these links.
More factory specs & repair guides for your Vandura Special
🛞 1991 GMC Vandura Special Tire Size & Pressure →🌧️ 1991 GMC Vandura Special Wiper Blade Sizes →💡 1991 GMC Vandura Special Light Bulb Sizes →📖 1991 GMC Vandura 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 1991 GMC Vandura 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 1991 GMC Vandura 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 1991 GMC Vandura Special?
Most 1991 GMC Vandura 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 1991 GMC Vandura Special?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 GMC Vandura Special. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.