1990 Mercury Topaz Oil Type & Capacity
The 1990 Mercury Topaz takes 5W-30 motor oil — 5.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 5.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| GS, 2D Sedan, Automatic | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| GS, 2D Sedan, Standard | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| GS, 4D Sedan, 2.3 S | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| GS, 4D Sedan, 2.3 X, Automatic | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| GS, 4D Sedan, 2.3 X, Standard | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| LS, 2.3 S | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| LS, 2.3 X, Automatic | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| LS, 2.3 X, Standard | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| LTS, 4WD | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| LTS, FWD, Automatic | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| LTS, FWD, Standard | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| XR5, Automatic | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
| XR5, Standard | SAE 5W-30 Super Premium Motor Oil | 5.00 QTS. | 4.00 QTS. | — |
Buy the right oil
Buy 5W-30 motor oil on Amazon1990 Mercury Topaz oil filter on AmazonAs an Amazon Associate we earn from qualifying purchases made through these links.
More specs & repair guides for your Topaz
1990 Mercury Topaz factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
7.8 quarts (7.38 L) — 50/50 mixture of FORD Premium Cooling System Fluid and water. Add .5 qt. to Coolant Recovery Reservoir.
Frequently asked questions
What type of oil does a 1990 Mercury Topaz take?
The 1990 Mercury Topaz takes 5W-30 motor oil (SAE 5W-30 Super Premium Motor Oil), per the factory service manual.
How much oil does a 1990 Mercury Topaz take?
The 1990 Mercury Topaz holds 5.0 quarts with a filter change, or 4.0 quarts without changing the filter.
Can I use synthetic oil in my 1990 Mercury Topaz?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1990 Mercury Topaz. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.