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.
1991 Eagle SummitOil Type & Capacity
OEM spec from the factory service manual for the Base, 2D Hatchback, Automatic variant.
Quick Answer
Oil Type
API - SG or SG/CD, SAE 5W-20/30/40 (Below 60Deg.F), 10W-30/40/50 (Above -10Deg.F), 20W-20/40/50 (Above 32Deg.F)
Capacity (w/ Filter)
4.50 QTS.
4.25 L
Variant
Base, 2D Hatchback, Automatic
Source: Factory service manual — 1991 Eagle Summit Base, 2D Hatchback, Automatic. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 1991 Eagle Summit take?
- The 1991 Eagle Summit requires API - SG or SG/CD, SAE 5W-20/30/40 (Below 60Deg.F), 10W-30/40/50 (Above -10Deg.F), 20W-20/40/50 (Above 32Deg.F). The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Base, 2D Hatchback, Automatic configuration.
- How much oil does a 1991 Eagle Summit need?
- The 1991 Eagle Summit takes 4.50 QTS. (4.25 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 1991 Eagle Summit?
- Yes — synthetic oil that meets the API - SG or SG/CD, SAE 5W-20/30/40 (Below 60Deg.F), 10W-30/40/50 (Above -10Deg.F), 20W-20/40/50 (Above 32Deg.F) specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 1991 Eagle Summit?
- Using oil that does not meet the API - SG or SG/CD, SAE 5W-20/30/40 (Below 60Deg.F), 10W-30/40/50 (Above -10Deg.F), 20W-20/40/50 (Above 32Deg.F) specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.