Hi Ian

I suppose anti freeze was used in vulnerable inland areas but not commonly elsewhere prior to 60s. I worked in Christchurch and Dunedin at the time and never heard it mentioned by workmates. although it was added to employers Landrovers after frozen radiators descending tracks in low ratio from inland radio huts at 5000ft. The Seven survived 13 deg C frosts outside with just an old coat over the bonnet, the method used by many.
My guess is the semi tropical humid Auckland atmosphere is the problem. Most old blocks have lain about for decades. Can hammer old heads and rust flakes fall out and repeat 5 years later. If not saturated in clean engine oil old parts should have holes blocked off to stop air flow.
Over the decades my father and self have had tools and items stored in (windy and dry) Wellington, Levin and Auckland. Latter by far the worst; painted tin plate items like old style biscuit tins rapidly rust in Auckland.

Location: Auckland, NZ

So do they here in Brittany Bob, especially so when your workshop is 100 meters from the sea!
Renaud

Location: Unsunny Brittany

Excuse me for hijacking this thread. Would like to contact Duncan Grimmond about the construction of Benjaustin, as shown on the l'Amicale Tricyclecariste de France website. Thanks

Location: Hastings-next-to-France

Evans waterless coolant. No water = no corrosion. Used by many especially among classic car owners who have previously had to replace blocked/corroded radiators, heater radiators, engine blocks clogging up and overheating in local hotspots, corroded studs/bolts where they penetrate water jacket etc. Snag is preparation for use and initial cost, though long term savings likely.

Fernox good as previously mentioned.

Colour of any antifreeze now no longer a valid recognition due to various manufacturers of differing chemical contents mixing up colouring.

Believe the one to avoid is anything containing OAT (organic acid technology).......look it up to see why.

Dennis

Location: N W Devon

I had looked at using this is another car, what put me off was that you cannot mix it with water, so if you need to top up etc you can only use Evans Waterless Coolant,

Location: Fife

As Evans will not conduct the heat as well as water your car will run hotter but it will not boil, so in summer you will get hotter feet.

Location: Rokeby, Victoria, Australia

I looked at a similar product here a few years back, it significantly raised the operating temperature of the engine due to the poor thermal conductivity. Aside from that in an open cooling system we probably have a responsibility to other road users and should not to use it, it is extremely slippery on a wet road, extremely!

Location: NZ

And, perhaps, more fuel vaporisation!

Yesterday I changed the coolant on my Ulster in preparation for the coming hill climb and sprint season. 1.2 litres of traditional Ethylene Glycol based anti-freeze (£13 for 5 litres from Euro Car Parts) topped up with tap water. Always worked in the past and don't see why it shouldn't continue to do so. Draining off the old coolant that's been in there for 12 months, it came out totally clear with a slight blue tint. No sediment or rust coloured water whatsoever.

Steve

Location: North Yorkshire