Recommend engine coolant for 2GM20f

[Rays]

Hi - noticed the coolant reservoir is low I'm sure this is straight forward but do I top off with reg antifreeze or some other kind? Should I you dilute with distilled water? Thanks

 

[Stu Jackson]

What color is it?

 

[Rays]

I'm not sure I'm not at the boat and won't be until April the boats currently in Mexico and ideally I wanted to buy the fluid in the states and take it down with me

 

[thinwater]

A. Read the manual.
B. Yes, distilled or DI water. Same as a battery, it is in the specs.

 

[Rays]

A) Manual is on the boat. B) hense the question

 

[kloudie1]

From the Yanmar reps.. http://ldmarineservice.com/files/yanmar_bulletins.pdf
Scroll down a few pages to the one labeled "Coolant Additives" and at the bottom of that page are some notes and recommendations..
If ya have green stuff in the catch bottle, you can use pre mixed .. don't change colors without flushing the system.