2018 Cadillac ATS Oil Type & Capacity
The 2018 Cadillac ATS oil type depends on the engine: the Base, 2D Coupe, AWD takes 5W-30 (6.0 quarts qt with filter); the Base, 2D Coupe, RWD, Automatic Trans takes 5W-30 (5.0 quarts qt with filter); the Base, 2D Coupe, RWD, Standard Trans takes 5W-30 (5.0 quarts qt with filter); the Base, 4D Sedan, AWD takes 5W-30 (6.0 quarts qt with filter); the Base, 4D Sedan, RWD, Automatic Trans takes 5W-30 (5.0 quarts qt with filter); the Base, 4D Sedan, RWD, Standard Trans takes 5W-30 (5.0 quarts qt with filter); the Luxury, 2D Coupe, AWD takes 5W-30 (6.0 quarts qt with filter); the Luxury, 2D Coupe, RWD, Automatic Trans takes 5W-30 (5.0 quarts qt with filter); the Luxury, 2D Coupe, RWD, Standard Trans takes 5W-30 (5.0 quarts qt with filter); the Luxury, 4D Sedan, AWD takes 5W-30 (6.0 quarts qt with filter); the Luxury, 4D Sedan, RWD, Automatic Trans takes 5W-30 (5.0 quarts qt with filter); the Luxury, 4D Sedan, RWD, Standard Trans takes 5W-30 (5.0 quarts qt with filter); the Premium Luxury, 2D Coupe, AWD takes 5W-30 (6.5 quarts qt with filter); the Premium Luxury, 2D Coupe, RWD takes 5W-30 (5.5 quarts qt with filter); the Premium Luxury, 4D Sedan, AWD takes 5W-30 (6.5 quarts qt with filter); the Premium Luxury, 4D Sedan, RWD takes 5W-30 (5.5 quarts qt with filter); the Premium Performance, 2D Coupe takes 5W-30 (5.5 quarts qt with filter); the Premium Performance, 4D Sedan takes 5W-30 (5.5 quarts qt with filter); the V, 2D Coupe, Automatic Trans takes 5W-30 (7.0 quarts qt with filter); the V, 2D Coupe, Standard Trans takes 5W-30 (7.0 quarts qt with filter); the V, 4D Sedan, Automatic Trans takes 5W-30 (7.0 quarts qt with filter); the V, 4D Sedan, Standard Trans takes 5W-30 (7.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2D Coupe, AWD: 5W-30, 6.0 quarts with filter
- Base, 2D Coupe, RWD, Automatic Trans: 5W-30, 5.0 quarts with filter
- Base, 2D Coupe, RWD, Standard Trans: 5W-30, 5.0 quarts with filter
- Base, 4D Sedan, AWD: 5W-30, 6.0 quarts with filter
- Base, 4D Sedan, RWD, Automatic Trans: 5W-30, 5.0 quarts with filter
- Base, 4D Sedan, RWD, Standard Trans: 5W-30, 5.0 quarts with filter
- Luxury, 2D Coupe, AWD: 5W-30, 6.0 quarts with filter
- Luxury, 2D Coupe, RWD, Automatic Trans: 5W-30, 5.0 quarts with filter
- Luxury, 2D Coupe, RWD, Standard Trans: 5W-30, 5.0 quarts with filter
- Luxury, 4D Sedan, AWD: 5W-30, 6.0 quarts with filter
- Luxury, 4D Sedan, RWD, Automatic Trans: 5W-30, 5.0 quarts with filter
- Luxury, 4D Sedan, RWD, Standard Trans: 5W-30, 5.0 quarts with filter
- Premium Luxury, 2D Coupe, AWD: 5W-30, 6.5 quarts with filter
- Premium Luxury, 2D Coupe, RWD: 5W-30, 5.5 quarts with filter
- Premium Luxury, 4D Sedan, AWD: 5W-30, 6.5 quarts with filter
- Premium Luxury, 4D Sedan, RWD: 5W-30, 5.5 quarts with filter
- Premium Performance, 2D Coupe: 5W-30, 5.5 quarts with filter
- Premium Performance, 4D Sedan: 5W-30, 5.5 quarts with filter
- V, 2D Coupe, Automatic Trans: 5W-30, 7.0 quarts with filter
- V, 2D Coupe, Standard Trans: 5W-30, 7.0 quarts with filter
- V, 4D Sedan, Automatic Trans: 5W-30, 7.0 quarts with filter
- V, 4D Sedan, Standard Trans: 5W-30, 7.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2D Coupe, AWD — 2.0L Eng,AWD | API - SAE 5W-30 | 6.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Base, 2D Coupe, RWD, Automatic Trans — 2.0L Eng,RWD | API - SAE 5W-30 | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Base, 2D Coupe, RWD, Standard Trans — 2.0L Eng,RWD | API - SAE 5W-30 | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Base, 4D Sedan, AWD — 2.0L Eng,AWD | API - SAE 5W-30 | 6.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Base, 4D Sedan, RWD, Automatic Trans — 2.0L Eng,RWD | API - SAE 5W-30 | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Base, 4D Sedan, RWD, Standard Trans — 2.0L Eng,RWD | API - SAE 5W-30 | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Luxury, 2D Coupe, AWD — 2.0L Eng,AWD | API - SAE 5W-30 | 6.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Luxury, 2D Coupe, RWD, Automatic Trans — 2.0L Eng,RWD | API - SAE 5W-30 | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Luxury, 2D Coupe, RWD, Standard Trans — 2.0L Eng,RWD | API - SAE 5W-30 | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Luxury, 4D Sedan, AWD — 2.0L Eng,AWD | API - SAE 5W-30 | 6.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Luxury, 4D Sedan, RWD, Automatic Trans — 2.0L Eng,RWD | API - SAE 5W-30 | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Luxury, 4D Sedan, RWD, Standard Trans — 2.0L Eng,RWD | API - SAE 5W-30 | 5.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Premium Luxury, 2D Coupe, AWD — 3.6L Eng,Normally Aspirated,AWD | API - SAE 5W-30 | 6.50 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Premium Luxury, 2D Coupe, RWD — 3.6L Eng,Normally Aspirated,RWD,Eng CD LGX | API - SAE 5W-30 | 5.50 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Premium Luxury, 4D Sedan, AWD — 3.6L Eng,Normally Aspirated,AWD | API - SAE 5W-30 | 6.50 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Premium Luxury, 4D Sedan, RWD — 3.6L Eng,Normally Aspirated,RWD,Eng CD LGX | API - SAE 5W-30 | 5.50 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Premium Performance, 2D Coupe — 3.6L Eng,Normally Aspirated,RWD,Eng CD LGX | API - SAE 5W-30 | 5.50 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| Premium Performance, 4D Sedan — 3.6L Eng,Normally Aspirated,RWD,Eng CD LGX | API - SAE 5W-30 | 5.50 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| V, 2D Coupe, Automatic Trans — 3.6L Eng,Turbocharger | API - SAE 5W-30 | 7.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| V, 2D Coupe, Standard Trans — 3.6L Eng,Turbocharger | API - SAE 5W-30 | 7.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| V, 4D Sedan, Automatic Trans — 3.6L Eng,Turbocharger | API - SAE 5W-30 | 7.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
| V, 4D Sedan, Standard Trans — 3.6L Eng,Turbocharger | API - SAE 5W-30 | 7.00 QTS. | — | Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. |
Complete Oil Change Bundle for 2018 Cadillac ATS
Everything you need delivered in one order. Pre-matched to your factory spec (5W-30, 6.0 quarts).
As an Amazon Associate we earn from qualifying purchases. Prices shown are real-time retail estimates.
Buy the right oil & filter for your ATS
🛒 Buy 5W-30 Full Synthetic Oil (6.0 quarts needed) on Amazon💡 Capacity Note: Your 2018 Cadillac ATS holds 6.0 quarts with filter. Since standard jugs are 5 quarts, be sure to pick up extra 1-quart bottles or a 2-pack to reach the full mark on the dipstick.
Popular 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 ATS
🛞 2018 Cadillac ATS Tire Size & Pressure →🌧️ 2018 Cadillac ATS Wiper Blade Sizes →💡 2018 Cadillac ATS Light Bulb Sizes →📖 2018 Cadillac ATS Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
9.3 quarts (8.8 L) — 50/50 mixture of DEX-COOL and clean, drinkable water
Frequently asked questions
What type of oil does a 2018 Cadillac ATS take?
It depends on the engine: Base, 2D Coupe, AWD uses 5W-30; Base, 2D Coupe, RWD, Automatic Trans uses 5W-30; Base, 2D Coupe, RWD, Standard Trans uses 5W-30; Base, 4D Sedan, AWD uses 5W-30; Base, 4D Sedan, RWD, Automatic Trans uses 5W-30; Base, 4D Sedan, RWD, Standard Trans uses 5W-30; Luxury, 2D Coupe, AWD uses 5W-30; Luxury, 2D Coupe, RWD, Automatic Trans uses 5W-30; Luxury, 2D Coupe, RWD, Standard Trans uses 5W-30; Luxury, 4D Sedan, AWD uses 5W-30; Luxury, 4D Sedan, RWD, Automatic Trans uses 5W-30; Luxury, 4D Sedan, RWD, Standard Trans uses 5W-30; Premium Luxury, 2D Coupe, AWD uses 5W-30; Premium Luxury, 2D Coupe, RWD uses 5W-30; Premium Luxury, 4D Sedan, AWD uses 5W-30; Premium Luxury, 4D Sedan, RWD uses 5W-30; Premium Performance, 2D Coupe uses 5W-30; Premium Performance, 4D Sedan uses 5W-30; V, 2D Coupe, Automatic Trans uses 5W-30; V, 2D Coupe, Standard Trans uses 5W-30; V, 4D Sedan, Automatic Trans uses 5W-30; V, 4D Sedan, Standard Trans uses 5W-30.
What is the oil capacity of a 2018 Cadillac ATS?
Oil capacity depends on the engine: Base, 2D Coupe, AWD holds 6.0 quarts with filter; Base, 2D Coupe, RWD, Automatic Trans holds 5.0 quarts with filter; Base, 2D Coupe, RWD, Standard Trans holds 5.0 quarts with filter; Base, 4D Sedan, AWD holds 6.0 quarts with filter; Base, 4D Sedan, RWD, Automatic Trans holds 5.0 quarts with filter; Base, 4D Sedan, RWD, Standard Trans holds 5.0 quarts with filter; Luxury, 2D Coupe, AWD holds 6.0 quarts with filter; Luxury, 2D Coupe, RWD, Automatic Trans holds 5.0 quarts with filter; Luxury, 2D Coupe, RWD, Standard Trans holds 5.0 quarts with filter; Luxury, 4D Sedan, AWD holds 6.0 quarts with filter; Luxury, 4D Sedan, RWD, Automatic Trans holds 5.0 quarts with filter; Luxury, 4D Sedan, RWD, Standard Trans holds 5.0 quarts with filter; Premium Luxury, 2D Coupe, AWD holds 6.5 quarts with filter; Premium Luxury, 2D Coupe, RWD holds 5.5 quarts with filter; Premium Luxury, 4D Sedan, AWD holds 6.5 quarts with filter; Premium Luxury, 4D Sedan, RWD holds 5.5 quarts with filter; Premium Performance, 2D Coupe holds 5.5 quarts with filter; Premium Performance, 4D Sedan holds 5.5 quarts with filter; V, 2D Coupe, Automatic Trans holds 7.0 quarts with filter; V, 2D Coupe, Standard Trans holds 7.0 quarts with filter; V, 4D Sedan, Automatic Trans holds 7.0 quarts with filter; V, 4D Sedan, Standard Trans holds 7.0 quarts with filter.
How often should I change the oil in my 2018 Cadillac ATS?
Most 2018 Cadillac ATS 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 — Cadillac recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2018 Cadillac ATS?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2018 Cadillac ATS. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.