Help Identify part of my engine OMC 120hp

[vanvalis]

Hello.

I have a 1972 omc 120. Here is a picture of the engine. On the left side (close to the camera) there is a cylendar hooked to the engine and pipes running into the block. Is this some after market fresh water cooling or a power steering pump? It is no where in my manual.

Thanks,

Van

 

[Don S]

Re: Help Identify part of my engine OMC 120hp

They are part of your fresh water cooling system.

 

[vanvalis]

Re: Help Identify part of my engine OMC 120hp

Wow didn't even know I had that. Does it need to be filled with water? Any maintenance I need to do? This is my first inboard/outboard.

Thanks!

 

[Don S]

Re: Help Identify part of my engine OMC 120hp

It gets anti freeze in it. The heat exchanger is basically the same thing as a cars radiator. Difference is, the heat exchanger uses raw water from the drives raw water pump to cool the antifreeze instead of air like a car does. The water is then sent out the exhaust to cool the exhaust as well. That way those hoses don't burn up every time you run the boat.

 

[vanvalis]

Re: Help Identify part of my engine OMC 120hp

Ok good. So what type of anti freeze should I use? Should it just be filled to the top of the canister?

Thanks again!

-Van