1991 Mercury Capri Oil Type & Capacity
The 1991 Mercury Capri oil type depends on the engine: the Base, Automatic takes 5W-30 (3.5 quarts qt with filter); the Base, Standard takes 5W-30 (3.5 quarts qt with filter); the XR2 takes 5W-30 (3.7 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, Automatic: 5W-30, 3.5 quarts with filter
- Base, Standard: 5W-30, 3.5 quarts with filter
- XR2: 5W-30, 3.7 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, Automatic — Normally Aspirated | SAE 5W-30 (Preferred) (Below 0Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 3.50 QTS. | 3.20 QTS. | Dipstick is used to determine exact fill requirements. |
| Base, Standard — Normally Aspirated | SAE 5W-30 (Preferred) (Below 0Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 3.50 QTS. | 3.20 QTS. | Dipstick is used to determine exact fill requirements. |
| XR2 — Turbocharger | SAE 5W-30 (Preferred) (Below 0Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 3.70 QTS. | 3.20 QTS. | Dipstick is used to determine exact fill requirements. |
More factory specs & repair guides for your Capri
🛞 1991 Mercury Capri Tire Size & Pressure →🌧️ 1991 Mercury Capri Wiper Blade Sizes →💡 1991 Mercury Capri Light Bulb Sizes →📖 1991 Mercury Capri Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
5.3 quarts (5.01 L) — 50/50 mixture of FORD Premium Cooling System Fluid and water
Frequently asked questions
What type of oil does a 1991 Mercury Capri take?
It depends on the engine: Base, Automatic uses 5W-30; Base, Standard uses 5W-30; XR2 uses 5W-30.
What is the oil capacity of a 1991 Mercury Capri?
Oil capacity depends on the engine: Base, Automatic holds 3.5 quarts with filter; Base, Standard holds 3.5 quarts with filter; XR2 holds 3.7 quarts with filter.
How often should I change the oil in my 1991 Mercury Capri?
Most 1991 Mercury Capri 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 — Mercury recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1991 Mercury Capri?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Mercury Capri. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.