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.
1990 Oldsmobile SilhouetteCoolant Type & Capacity
OEM spec from the factory service manual for the 125C/MD9 variant.
Quick Answer
Coolant Type
50/50 mixture of Ethylene Glycol Base Antifreeze and water
Capacity
10.50 QTS.
9.93 L
Variant
125C/MD9
Note: GM Specification 1825-M.
This vehicle's factory manual
1990 Oldsmobile Silhouette: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Other specs:All specs
What You'll Need
Related for Your 1990 Oldsmobile Silhouette
Frequently Asked Questions
- What type of coolant does a 1990 Oldsmobile Silhouette take?
- The 1990 Oldsmobile Silhouette requires 50/50 mixture of Ethylene Glycol Base Antifreeze and water. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the 125C/MD9 configuration.
- How much coolant does a 1990 Oldsmobile Silhouette hold?
- The 1990 Oldsmobile Silhouette cooling system capacity is 10.50 QTS. (9.93 L).
- Can I use universal coolant in my 1990 Oldsmobile Silhouette?
- It is strongly recommended to use coolant that meets the 50/50 mixture of Ethylene Glycol Base Antifreeze and water specification. Universal coolants may not provide the correct corrosion protection for your engine's materials.
- What happens if I use the wrong coolant in my 1990 Oldsmobile Silhouette?
- Using coolant that does not meet the OEM specification can cause corrosion, gasket damage, and overheating. Always verify the correct coolant type before topping off or flushing the system.