[Healeys] Which coolant/antifreeze?

[Oudesluys]

Use regular green or blue coolant (premix or 50% concentrate with 50% 
distilled or de-ionised water). Never use the red or purple stuff in an 
older car as it may destroy some (head) gaskets. The brand is not that 
important. The formulas are fairly simple. I have used the green/blue 
coolants for more than 50 years in various cars, now classics, and never 
had any issues. I do change the coolant every 2 years and flush the 
engine and radiator with the thermostat removed using a radiator 
cleaning agent however it hardly ever shows up any sludge. The engines I 
did dismantle for a rebuild were very clean internally.
On the Continent it is very rare that pure water is used. Nearly all use 
coolant this in contrast with the UK and USA.
Kees Oudesluijs


Op 19-8-2017 om 15:27 schreef Paul Leeks:
> 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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