[Healeys] Which coolant/antifreeze?

[rft2 at aol.com]

Hi Paul,


AH engine is all cast iron and may have older hoses and gaskets.  So I would be hesitant to use an OAT due to potential hose and gasket degradation.  


My recommendation would be to use a nitrited coolant to protect the cast iron, such as Zerex G-05 (or some BASF equivelant).  If you want to go conventional coolant make sure it has nitrites (commonly found in heavy duty diesel coolants).


Not sure which Castrol product you are looking at, tell me the ingrediants off the back of the bottle and I can give you an opinion.


I've used Zerex G-05, its an extended life coolant with nitrites for cast iron, silicates for aluminum(radiator) protection, azoles for yellow metal and a high dose of benzoic acid to long life protection of most metals in the engine.


Good luck


Mal Hickok
rft2 at aol.com
269-207-5074



-----Original Message-----
From: Paul Leeks <paull at glasgows.co.uk>
To: <healeys at Autox.Team.Net> <healeys at autox.team.net>
Sent: Sat, Aug 19, 2017 12:12 pm
Subject: [Healeys] Which coolant/antifreeze?



Hi all

I need to replace the coolant/antifreeze and was wondering if it mattered what type I used?

AH Spares has Castrol anti-freeze at £11 / ltr, whereas Halfords (local high street car store) has OAT Antifreeze Concentrate at £5 / ltr.


I live in temperate Lancashire UK, so I don't need to cope with any temperature extremes.


So, can I just use the modern one?


Many thanks


Paul
100/6 BN4



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