Do you have to use dex cool Oldsmobile silhouette?

Yes, it is recommended to use Dex-Cool coolant in an Oldsmobile Silhouette, as this type of coolant is designed for use in GM vehicles and helps prevent corrosion and buildup in the engine. Using a different type of coolant may lead to compatibility issues and potential engine damage. Always check the owner’s manual for specific recommendations regarding coolant type and maintenance.