Coolant Corrosion Inhibitor

[MainlySteam]

Only a saily 50 hp Volvo non turbo diesel, but you are the real engine guys/gals so asking here. Thought I would change the coolant so rolled into the motor factors to get some inhibitor and, surprise, some is 4x the cost of others.

Are there any significant differences and if so what should I look out for. Note freezing is not a problem here or anywhere where I am likely to go. For the sake of clarity it is for in service use, not laying up, and the only things on the coolant circuit are the engine and hot water calorifier - only about 10-12 litres at most of total fluid mix I guess (engine spec alone is 8 litres) so don't need much.

Sure it must have come up before but a search was unproductive - even tried search on "inhibited" but got the story of a few sex lives instead.

Thanks

John

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[hlb]

Some inhibitors are for alloy engines and more expencive. But you dont need this. I'd just get the ordinary stuff.

<hr width=100% size=1> <font color=blue>No one can force me to come here.<font color=red> I'm a volunteer!!.<font color=blue>

Haydn

 

[tr7v8]

Use something that is specifically non-phosphated suitable for aluminium engines, not sure if the saily Volvo unit has any alloy but this will give the most protection. And the rubbery bits will be grateful!
I suspect a local car dealers may have something suitable as in your area some of the cars will run corrosion inhibiter, although maybe easier to run anti freeze if you can get it.
Also use distilled or similar water as it has less crud in it to settle out in the waterways.

Post Number 998!

<hr width=100% size=1>Jim

Draco 2500

 

[MainlySteam]

I can add that the head is aluminium and it also has quite alot of "rubbery stuff" as well as the hoses (the heat exchanger end caps for example).

Thanks for the feedback.

John

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