[Healeys] Which coolant/antifreeze?

[Roger Grace]

Generally you should try to use as little glycol as you can get away with in your climatic zone; unnecessary glycol reduces the specific heat of the coolant and hence its cooling capacity; I use about 15-20% (Canadian W coast) and to compensate for the reduced corrosion protection I use an additive such as No-Rosion; this gives 5 year interval between coolant changes.
rg  

From: Oudesluys 
Sent: Tuesday, August 22, 2017 1:47 AM
To: healeys at autox.team.net 
Subject: Re: [Healeys] Which coolant/antifreeze?

There is no need to add Zerex. It may help in extreme conditions (e.g. racing) but if everything is new/rebuild it is a waste of money. Make sure your radiator is rebuild with a fresh and uprated core, preferably with an electric fan,  and use an original SMITHS/Remax/AC sleeved thermostat.
Kees Oudesluijs

Op 22-8-2017 om 6:38 schreef Bruce Steele:

  Harold, this is a timely discussion for me, as I have a fresh engine.  The Zerex site indicates that their Racing Super Coolant needs to me mixed at a ratio of 90% water/10% coolant.  Your email suggests you add it to an ethaline glycol mixture.  Is that the case?  And how are you diluting it?



  Thanks.



  Bruce Steele

  Brea, CA

  1960 BN7



  From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Harold Manifold
  Sent: Saturday, August 19, 2017 11:47 AM
  To: 'Paul Leeks' mailto:paull at glasgows.co.uk; 'mailto:healeys at Autox.Team.Net' mailto:healeys at autox.team.net
  Subject: Re: [Healeys] Which coolant/antifreeze?



  Paul,



  May I suggest a 50/50 mixture of Ethylene Glycol antifreeze and water with the addition of Valvoline’s Zerex Racing Super Coolant additive. The antifreeze brand is not critical but Zerex does make good coolant products.



  Harold




------------------------------------------------------------------------------

  From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Paul Leeks
  Sent: Saturday, August 19, 2017 6:27 AM
  To: <healeys at Autox.Team.Net>
  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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