2012 GMC RV Cutaway Oil Type & Capacity
The 2012 GMC RV Cutaway oil type depends on the engine: the 4.8L takes 5W-30 (6.0 quarts qt with filter); the 6.0L takes 5W-30 (6.0 quarts qt with filter); the 6.6L takes 15W-40 (10.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- 4.8L: 5W-30, 6.0 quarts with filter
- 6.0L: 5W-30, 6.0 quarts with filter
- 6.0L: 5W-30, 6.0 quarts with filter
- 6.6L: 15W-40, 10.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 4.8L — 4.8L Eng | API - SAE 5W-30 | 6.00 QTS. | — | The engine requires engine oil approved to the dexos1 specification. Oils meeting this specification can be identified with the dexos certification mark. Look for and use only an engine oil that displays the dexos certification mark of the proper viscosity grade. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity oils such as SAE 10W-30, 10W-40, or 20W-50. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below -29Deg. C (-20Deg. F), an SAE 0W-30 oil should be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate viscosity grade, be sure to always select an oil that meets the required specification, dexos. |
| 6.0L Eng VIN B — 6.0L Eng | API - SAE 5W-30 | 6.00 QTS. | — | The engine requires engine oil approved to the dexos1 specification. Oils meeting this specification can be identified with the dexos certification mark. Look for and use only an engine oil that displays the dexos certification mark of the proper viscosity grade. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity oils such as SAE 10W-30, 10W-40, or 20W-50. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below -29Deg. C (-20Deg. F), an SAE 0W-30 oil should be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate viscosity grade, be sure to always select an oil that meets the required specification, dexos. |
| 6.0L Eng VIN G — 6.0L Eng | API - SAE 5W-30 | 6.00 QTS. | — | The engine requires engine oil approved to the dexos1 specification. Oils meeting this specification can be identified with the dexos certification mark. Look for and use only an engine oil that displays the dexos certification mark of the proper viscosity grade. SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity oils such as SAE 10W-30, 10W-40, or 20W-50. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below -29Deg. C (-20Deg. F), an SAE 0W-30 oil should be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate viscosity grade, be sure to always select an oil that meets the required specification, dexos. |
| 6.6L — 6.6L Eng | API - SAE 15W-40 | 10.00 QTS. | 9.20 QTS. | Use ONLY engine oil that have designation: CJ-4. Designation CJ-4 can appear either alone or in combination with other API designations such as API - CJ-4/SL. Use SAE 10W-30 if temperatures stay above 0Deg.F (-18Deg.C) before your next oil change. When it is very cold, Below 0Deg.F (-18Deg.C), you should use SAE 5W-30 to improve cold starting and prevent engine damage. DO NOT use other viscosity oils such as SAE 10W-40 or SAE 20W-50. |
More factory specs & repair guides for your RV Cutaway
🛞 2012 GMC RV Cutaway Tire Size & Pressure →🌧️ 2012 GMC RV Cutaway Wiper Blade Sizes →💡 2012 GMC RV Cutaway Light Bulb Sizes →📖 2012 GMC RV Cutaway Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
12.4 quarts (11.73 L) — 50/50 mixture of DEX-COOL and clean, drinkable water. All capacities are approximate. When adding, be sure to fill to the approximate level. Recheck the fluid level after filling.
Frequently asked questions
What type of oil does a 2012 GMC RV Cutaway take?
It depends on the engine: 4.8L uses 5W-30; 6.0L uses 5W-30; 6.6L uses 15W-40.
What is the oil capacity of a 2012 GMC RV Cutaway?
Oil capacity depends on the engine: 4.8L holds 6.0 quarts with filter; 6.0L holds 6.0 quarts with filter; 6.6L holds 10.0 quarts with filter.
How often should I change the oil in my 2012 GMC RV Cutaway?
Most 2012 GMC RV Cutaway 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 2012 GMC RV Cutaway?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2012 GMC RV Cutaway. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.