1998 Mercury Sable Oil Type & Capacity: 5W-20 (5.5 quarts)
The 1998 Mercury Sable takes 5W-20 motor oil — 5.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-20 — 5.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| GS, 3.0 S | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| GS, 3.0 U, AX4N | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| GS, 3.0 U, AX4S | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| LS Premium, 3.0 S | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| LS Premium, 3.0 U | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| LS, 4D Sedan, 3.0 S | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| LS, 4D Sedan, 3.0 U, AX4N | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| LS, 4D Sedan, 3.0 U, AX4S | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| LS, 4D Wagon, 3.0 S | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| LS, 4D Wagon, 3.0 U, AX4N | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
| LS, 4D Wagon, 3.0 U, AX4S | SAE 5W-20 Premium Synthetic Blend Motor Oil | 5.50 QTS. | — | — |
More factory specs & repair guides for your Sable
🛞 1998 Mercury Sable Tire Size & Pressure →🌧️ 1998 Mercury Sable Wiper Blade Sizes →💡 1998 Mercury Sable Light Bulb Sizes →📖 1998 Mercury Sable Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
10.6 quarts (10.03 L) — 50/50 mixture of FORD Premium Cooling System Fluid and water
Frequently asked questions
What type of oil does a 1998 Mercury Sable take?
The 1998 Mercury Sable takes 5W-20 motor oil (SAE 5W-20 Premium Synthetic Blend Motor Oil), per the factory service manual.
What is the oil capacity of a 1998 Mercury Sable?
The 1998 Mercury Sable oil capacity is 5.5 quarts with a filter change.
How often should I change the oil in my 1998 Mercury Sable?
Most 1998 Mercury Sable 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 1998 Mercury Sable?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1998 Mercury Sable. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.