Anti freeze additive
- Thread starter cbouch
- Start date
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If you have answers, please help by responding to the unanswered posts.
Lou_tribal
Guru
What you describe looks to already be there in prestone antifreeze so what is the need to add more?
L
Nomad Willy
Guru
MAC’s 13
It’s a lubricant. It actually has oil in the additive. You add it to your coolant.
Perhaps it’s pre-ilmulsified (sorry the spell) but it’s oil and it probably lubricates the pump bearing but one needs to not put too much in the coolant ... like I did. Follow the directions and ditch any notions of some is good more is better.
It will become a big mess w too much.
It’s a lubricant. It actually has oil in the additive. You add it to your coolant.
Perhaps it’s pre-ilmulsified (sorry the spell) but it’s oil and it probably lubricates the pump bearing but one needs to not put too much in the coolant ... like I did. Follow the directions and ditch any notions of some is good more is better.
It will become a big mess w too much.
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"So why do that if you can just replace the additive?"
Contaminants and breakdown of existing additive package can coat the insides of the cooling system adding a layer of insulation exactly where you want heat tranfer to occurr. Removing old coolant and replacing with an adequate mix is cheap insurance against this buildup - in some cases flushing agents used before the new coolant is added is also required.
rslifkin
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You can do antifreeze testing to determine when an additive top-up is needed, but it's rare on smaller engines. Typically it's only cost effective when the system holds many gallons.
FF
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IF antifreeze protection is not required where you boat , 100% distilled water , with water pump lube works fine.
But it too must be changed out every so often.
Cost is not the big advantage engine cooling is .
Antifreeze only has 5/8 the heat transfer ability of water , cars use high pressure caps (15-18PSI) to overcome this, but most old boats have 2 or 3 PSI cooling systems .
In Fl we use 1/3 antifreeze 2/3 distilled water and a can of WP lube .
But it too must be changed out every so often.
Cost is not the big advantage engine cooling is .
Antifreeze only has 5/8 the heat transfer ability of water , cars use high pressure caps (15-18PSI) to overcome this, but most old boats have 2 or 3 PSI cooling systems .
In Fl we use 1/3 antifreeze 2/3 distilled water and a can of WP lube .
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rslifkin
Guru
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- 7,589
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- USA
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- Hour Glass
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- Chris Craft 381 Catalina
Yes, less antifreeze can make sense in conditions where you're pushing the outside temperature limits of the cooling system. Once you get down to a low enough amount, then adding corrosion inhibitor is necessary.
"In Fl we use 1/3 antifreeze 2/3 distilled water and a can of WP lube ."
Interesting - when used in vehicles not intended to see freeze conditions we always used softened water and avoided DI water when used with a lube/additive non coolant package.
https://www.hyperlube.com/blog/blog/why-you-should-never-use-distilled-water-in-your-cooling-system/
