Mercury – Antifreeze (1 Gallon) | Engine Freeze & Corrosion Protection | 92-8M0050227

Overview

This is the kind of antifreeze you grab when fall starts creeping in and you know it’s time to put the boat to bed for a bit. It pours clean, doesn’t foam up, and moves through the system without any weird smells or residue. I’ve used it on engines that sat all winter in some pretty sharp cold, and everything woke up in spring without drama. It’s basically one of those “don’t overthink it” products that keeps trouble away.

Key Features

  • Marine-Grade Formula – Protects cooling passages during freezing weather.
  • Corrosion-Guard Additives – Helps slow down rust and scale inside the system.
  • Pre-Mixed Convenience – Ready to pour with no measuring or guessing.
  • OEM-Spec Chemistry – Matches Mercury’s requirements for seasonal engine protection.

Engine & Boat Compatibility

  • Mercury outboard cooling systems
  • Sterndrive cooling circuits
  • Closed-loop setups
  • Mercury marine maintenance series

Performance & Practical Benefits

Once this stuff runs through the cooling system, the engine’s pretty well protected from cold snaps or those random late-season freezes. It also keeps the internal passages from getting that gritty or chalky buildup that shows up after long storage. When you fire the boat up in the spring, the engine usually warms up clean without odd smells or flakes coming out of the tell-tale. It just makes winterizing feel simpler and less stressful.

Why Buy OEM

Mercury blends this antifreeze to work with the metals, hoses, and seals they actually build into their engines. That means no swelling, no weird reactions, and no guessing whether the mix is doing its job. It keeps everything stable through the off-season so the engine wakes up in the same shape it went to sleep.

FAQ

1. How do I know when it needs replacing?
If the color looks washed out or you spot low levels after storage, it’s time to refresh it.

2. Do I need to mix it before use?
No—just pour it straight in.

3. Is it fine for saltwater boats?
Yes, it’s blended to handle moisture and salt exposure during storage.

4. Any tips when winterizing with it?
Let the engine run long enough for the antifreeze to fully replace the raw water in the system.

5. What can happen if you skip antifreeze before a freeze?
Housings or passages can crack, and corrosion kicks in fast—both expensive problems.

• Supersessions
  92-8M0073196, 92-8M0073196