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Beery

Member Since: 16 Nov 2014
Location: NSW
Posts: 36

2015 Defender 130 Puma 2.2 HCPU Corris Grey

You might want to try reducing the glycol concentration in your coolant from 50% down to 40% or 30%. This will increase the heat transfer capacity of your cooling system.
It will still give you antifreeze protection to about -20c.

Water is much more efficient at conducting heat than glycol.

17th Jan 2017 9:38pm

Eduardo

Member Since: 28 Aug 2008
Location: RegiÃ³n Metropolitana
Posts: 2110

2007 Defender 110 Puma 2.4 SW Stornoway Grey

Thanks for the answers and in fact doesnt look very good.

The tank looks OK and no coolant leaking are visible but I will check again. I change almost all the coolant some month ago (after a pipe repair). I will see how much Glycol I have (I dont remember now) but for our use -20°C looks OK.

Cheers! Eduardo

MY 2007 110 SW PUMA 2.4: Big Fog of 64'
MY 1994 Jayco 1207 Folding camper: "El Tremendo"

Click image to enlarge

18th Jan 2017 12:38pm

pannawonica

Member Since: 21 Nov 2010
Location: Clackline Western Australia
Posts: 568

I have the usual cooling mods except the fan spacer! Heavy towing and grades still send the temperature too boiling point. Whilst being a pressurised system this is not such a problem. It does indicate that the cylinder head temperature sensor is pointing to a build up of heat. I think this is due too radiator efficiency, or lack of. I would like too hear from someone with an upgraded aftermarket radiator.

20th Jan 2017 6:30am

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