Thread: Red VS Green Coolant again!!!

I spoke to an old campaigner at Natrad last week - he was very much against ethylene glycol and OAT/HOAT. Reckoned that they just cause metal corrosion, rubber deterioration and therefore leaking problems. Even though I'm in Canberra, all this guy uses in cooling systems in all the vehicles they service is their own Natra Radiator Conditioner (112g/l Triethanolamine) - they don't recommend anything else unless you hit the snow. This guys been around a long time, so you reckon they would know about it if people had problems with coolant freezing. My Disco gets left outside, and even on a -3 night, the engine bay is still +3 (and water probably warmer still as it is a temperature "buffer" more so than air temp), even if vehicle hasn't been driven that day (it is in the sun during the day).

Hi Andy,

The stuff I use comes from Coz at Barbagello's in Ozi Park. It is made by Castrol and is called Radicool Coolant.
Contains :- 32% Ethelene Glycol
10ppm Denatonium Benzoate
also contains a Bittering agent [what ever that is]
Exceeds AINZS 2108.1 and most international standards.
Mix 50/50 with distilled water

Seems to be ok - no problems as yet. Did look at Penrite, Dunno.

Tony

Running a stronger brew will run hotter temps. Is the GREEN running the same brew ratios?

Nothing beats plain water for heat transfer.

Maybe the bittering agent is make it unpalatable. After all it is highly poisonous if ingested. There was a case in Europe a while back where some unscrupulous wine makers were adding anti freeze to wine to make it sweeter. Needless to say some people died.

Hey Andy!
once again our paths cross
When the shop put the new rocker gaskets in they put in green coolant, I asked the question and the owner said it was organic and the reason he changed brands,, he then went out back to check and came back a bit concerned that the latest packaging didnt have organic on the label anymore.

anyone in the trade know about "Guardian" coolant??

THat's one of the questions I have for the guys who just did my engine install.
All I know right now is they filled it with green coolant. As for what specs I don't know but at least it's all new so shouldn't be a case of mixed.

Conventional antifreeze is formulated with inhibitors composed of neutralized inorganic acids, such as phosphates and silicates, to protect a cooling system against rust and corrosion. Over time, however, inorganic inhibitors deplete and may no longer provide maximum cooling system protection. This is why it is generally recommended that conventional coolants be changed every 2 years or 24,000 miles.

In contrast, OAT coolants are formulated with neutralized organic acids to form a highly effective corrosion inhibitor system that provides maximum cooling system protection. Organic inhibitors do not deplete as quickly as the inorganic inhibitors used in conventional coolants. This is why properly formulated OAT coolants typically provide up to 150,000 miles or 5 years of cooling system protection between service intervals. The superior OAT formula in PEAK Global LifeTime uniquely provides a LifeTime of cooling system protection - for as long as you own your vehicle.
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From Autoexpert site.
So it appears the advantage of OAT is longer life, and reduced service costs.

Honda do not recommend change for 10years in my Jazz so it must be good stuff.

Regard sPhilip A

Originally Posted by PhilipA

Honda do not recommend change for 10years in my Jazz so it must be good stuff.

Honda will no doubt be more than happy to sell you a new radiator, water pump etc in 5 years time...