1986 Plymouth Conquest Oil Type & Capacity: 5W-20 (5.1 quarts)
The 1986 Plymouth Conquest takes 5W-20 motor oil — 5.1 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-20 — 5.1 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 2.6 H, Automatic | API - SAE 5W-20/30/40 (Below 60Deg.F), 10W-30/40/50 (Above 0Deg.F), 15W-40 (Above 10Deg. F), 20W-20 (20Deg.F to 80Deg. F), 20W-40/50/30 (Above 20Deg.F) | 5.10 QTS. | — | — |
| 2.6 H, Standard | API - SAE 5W-20/30/40 (Below 60Deg.F), 10W-30/40/50 (Above 0Deg.F), 15W-40 (Above 10Deg. F), 20W-20 (20Deg.F to 80Deg. F), 20W-40/50/30 (Above 20Deg.F) | 5.10 QTS. | — | — |
| 2.6 N | API - SAE 5W-20/30/40 (Below 60Deg.F), 10W-30/40/50 (Above 0Deg.F), 15W-40 (Above 10Deg. F), 20W-20 (20Deg.F to 80Deg. F), 20W-40/50/30 (Above 20Deg.F) | 5.10 QTS. | — | — |
Complete Oil Change Bundle for 1986 Plymouth Conquest
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Buy the right oil & filter for your Conquest
🛒 Buy 5W-20 Full Synthetic Oil (5.1 quarts needed) on Amazon💡 Capacity Note: Your 1986 Plymouth Conquest holds 5.1 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.
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More factory specs & repair guides for your Conquest
🛞 1986 Plymouth Conquest Tire Size & Pressure →🌧️ 1986 Plymouth Conquest Wiper Blade Sizes →💡 1986 Plymouth Conquest Light Bulb Sizes →📖 1986 Plymouth Conquest Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Frequently asked questions
What type of oil does a 1986 Plymouth Conquest take?
The 1986 Plymouth Conquest takes 5W-20 motor oil (API - SAE 5W-20/30/40 (Below 60Deg.F), 10W-30/40/50 (Above 0Deg.F), 15W-40 (Above 10Deg. F), 20W-20 (20Deg.F to 80Deg. F), 20W-40/50/30 (Above 20Deg.F)), per the factory service manual.
What is the oil capacity of a 1986 Plymouth Conquest?
The 1986 Plymouth Conquest oil capacity is 5.1 quarts with a filter change.
How often should I change the oil in my 1986 Plymouth Conquest?
Most 1986 Plymouth Conquest 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 — Plymouth recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1986 Plymouth Conquest?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1986 Plymouth Conquest. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.