Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPLYMOUTH1985CONQUEST L4-2555CC 2.6L SOHC TURBOREPAIR AND DIAGNOSISMAINTENANCEFLUIDSENGINE OILSPECIFICATIONS
1985 Plymouth Conquest L4-2555cc 2.6L SOHC Turbo
Engine Oil: Specifications
1985 Plymouth Conquest L4-2555cc 2.6L SOHC TurboSECTION Specifications
Type SF, SF/CC, SG
CAPACITY, Refill:
1.5-liter eng. 2.5 Liters 2.7 Quarts
1.6-liter Turbo eng. 3.0 Liters 3.2 Quarts
2.0-liter eng. 3.5 Liters 3.7 Quarts
2.6-liter eng. 4.3 Liters 4.6 Quarts
Capacity shown is without filter. When replacing filter, additional oil may be needed
Turbo Models
Above 32°F (-°C) 20W-20, 20W-40
Above -10°F (-23°C) 10W-30
Below 60°F (16°C) 5W-30
All Other Models
Above 32°F (0°C) 20W-20, 20W-40, 20W-50
Above -10°F (-23°C) 10W-30, 10W-40, 10W-50
Below 60°F (16°C) 5W-20*, 5W-30, 5W-40
*Not recommended for sustained high-speed driving
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.