1985 Mercury Grand Marquis Oil Type & Capacity
The 1985 Mercury Grand Marquis 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 |
|---|---|---|---|---|
| Base, 2D Sedan | SAE 5W-30 (Preferred) (Below -20Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | — |
| Base, 4D Sedan | SAE 5W-30 (Preferred) (Below -20Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | — |
| Colony Park | SAE 5W-30 (Preferred) (Below -20Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | — |
| LS, 2D Sedan | SAE 5W-30 (Preferred) (Below -20Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | — |
| LS, 4D Sedan | SAE 5W-30 (Preferred) (Below -20Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | — |
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More specs & repair guides for your Grand Marquis
1985 Mercury Grand Marquis factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
14.4 quarts (13.62 L) — 50/50 mixture of FORD Premium Cooling System Fluid and water. Specification: ESE M97B44 A.
Frequently asked questions
What type of oil does a 1985 Mercury Grand Marquis take?
The 1985 Mercury Grand Marquis takes 5W-30 motor oil (SAE 5W-30 (Preferred) (Below -20Deg.F to 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F)), per the factory service manual.
How much oil does a 1985 Mercury Grand Marquis take?
The 1985 Mercury Grand Marquis holds 5.0 quarts with a filter change, or 4.0 quarts without changing the filter.
Can I use synthetic oil in my 1985 Mercury Grand Marquis?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1985 Mercury Grand Marquis. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.