RELIABILITY: Engineered by Mercury Marine to protect your engine against gelling and overheating while providing superior freeze protection during winter storage.

Key Features

• ✔ Ready-to-use 50/50 Pre-mixed formula
• ✔ Low-silicate / Phosphate-free
• ✔ Prevents silicate gelling and scale
• ✔ Protects petrol and diesel engines

Technical Specs

Base:	Ethylene Glycol
Freeze Point:	-36°C (-32.8°F)
Boiling Point:	130°C (265°F)
Volume:	4L - 5L (Varies by MPN)

Make/System	Model/Application	Notes
MerCruiser Petrol	All MCM Engines	With Closed Cooling Systems
MerCruiser Diesel	All MIE Engines / QSD Series	Includes QSD 2.0L and others
Quicksilver Repower	Plus-Series Engines	Recommended OEM Fluid

Is this a genuine original part?

Yes, this is a genuine Quicksilver product manufactured by Mercury Marine specifically for MerCruiser engine applications.

How do I know if it is compatible?

If your MerCruiser has a closed cooling system (utilizing a heat exchanger and expansion tank), this is the correct coolant. Check your owner's manual for part number 92-8M0056173 or its superseded number 92-8M0117687.

Can I mix this with regular automotive antifreeze?

While it meets several GM and ASTM standards, mixing different coolant brands or types can degrade the specialized corrosion inhibitors designed for marine engines. It is always recommended to perform a full flush when switching types.