What kind of antifreeze goes in my mercruiser 470?

Question

What kind of antifreeze goes in my mercruiser 470?

Answer 1

Any type of antifreeze/coolant (NAPA, MerCruiser, Autozone, Prestone, etc.) will work in your boat (Don't use "Dexcool" BTW. Just use the green stuff.). Just make sure it's mixed 50/50 and you'll be fine. You can actually buy 50/50 in gallon jugs at NAPA, or you can mix it yourself. Just make sure when you're filling the coolant tank on that engine that you pour a little bit in at a time to let it "burp," or make sure the air is out of all of the voids before filling it to the full line.

Answer 2

Any type of coolant, mixed with water, 50/50. there are marine coolants that you may be able to get at your local marine store.

Answer 3

Anything but DexCool. Anti-freeze is toxic but the degradation of regular anti-freeze is a lot faster than the "environmentally safe" kinds. Those are toxic too but it takes a wee bit more to kill you.

Answer 4

ethyl-glycol anti-freeze, commonly used in automotive and marine applications, mixed at 50-50 will give you good protection from freezing and corrosion inside the engine.