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• 
  What colour should my coolant be? 21 Feb 2025 (Ask HJ)
  I have an Audi SQ5. What should the appearance of the coolant look like?
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  Where's the coolant sensor on the Ford Ka? 12 Nov 2014 (Ask HJ)
  I can't find location of coolant sensor on my 2001 Ford Ka. I've replaced all the coolant system apart from this, can you help?
• Toyota Yaris - Toyota Coolant - Which one? 5 Jul 2010 (Forum)
  If the coolant is S-LLC then obviously I don't have to worry, but can these 2 coolants be recognised visually by colour? I'm not sure which one it has. Thanks in advance.
• Coolant level 23 Nov 2001 (Forum)
  Since the cylinder head has been replaced with a skimmed unit, the coolant level has been of this order: last Saturday picked up car - noticed trickle of coolant thru filler hole after driving home. Sunday still trickling out. Decided to check coolant level each am when engine cold Monday; column of coolant measured 29 cm (manufacturer recommends 25 to 30 cm) coolant still trickling out during use.
• VW Golf Mk 3 10 Nov 2004 (Forum)
  I have just replaced the waterpump / thermostat on my 96 Golf. Replaced the coolant with Mobil 'Advanced' coolant (pink in colour). I've noticed that after a journey, there is a trace of evapourated pink coolant on the water pump which disappears after a couple of hours with no visible loss of coolant.
• Audi A3 - Oil in Coolant Reservoir 2 Nov 2011 (Forum)
  Hi,   The Coolant light came on my dash the other day and says in the handbook that it lights up when the "coolant level low/coolant temperature too high". I checked the coolant reservoir and it is full of oil.
• Coolant - help ! - Toyota Corolla 5 Jan 2006 (Forum)
  Annoyed with myself - haven't checked the coolant recently in my Corolla 1.4, and now noticed it is v.low. What coolant would HJ readers recommend ? Will I have damaged the engine (last checked 9 months ago in service and OK) ? How do you check the condition of the coolant that's in ?
• Ford Mondeo Mk 3 2.2 TDCI - Help! Cant drain coolant system 2 Jan 2018 (Forum)
  I've got a problem, and while I'm fairly sure I'm not being a biff, I just want to check.  I'vbe gor a 56 plate 2.2 TDCI Mondeo, and the coolant level is very low (below minimum).  I'm trying to drain the coolant system to replace the coolant.  MKy haynes manual says there is a coolant drain plug at the bottom of the radiator, but having spent a significant amount of time under the car, I can't seem to find it...
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  Peugeot 406 leaking coolant from back of engine 5 Dec 2012 (Ask HJ)
  Why would coolant be leaking from the back of the engine?
• Rover 25 , 53000 on clock - Rover 25 coolant loss 17 Aug 2014 (Forum)
  Any thoughts on this. One thing I did notice is the coolant always stays at the minimum mark. This is a bit odd how the coolant I pour in gets lost. The coolant I poured in is a pink colour compared to the blue coloured coolant already there.
• VW Golf Mk5 - Coolant level issues 4 Jul 2012 (Forum)
  Plus the coolant is really foaming inside the tank. The coolant system has been bled several times to try and remove any air, the heaters are working fine and there's no film of oil/smell of fumes in the expansion tank and no signs of coolant in the oil.
• Vauxhall Cavalier 2.0 CDX 1995 - Coolant Level Sensor -how does it work 2 May 2012 (Forum)
  Does anyone know how the Coolant Level Sensor works ?? It is integral with the coolant expansion tank cap. ( I will post a picture later of the cap & sensor) Recently my dasboard Coolant Low Level Warning Lamp has been coming on & I am losing some coolant.
• Fluctuating Coolant Level 3 Nov 2001 (Forum)
  My 1990 Citroen BX TGD, ie the 1905cc normally aspirated diesel, recently required the hose leading to the heater matrix replacing as it was leaking coolant through it. The repair has been effected and the coolant level has stabilised for several days and hundreds of miles in the coolant expansion bottle at the recommended level. Last night the low level coolant warning light came on after the car had been standing for 2 hours after use in congested town traffic.
• Ford Focus (1998 - 2004) - 1999 1.8 Query after having coolant replaced 11 Feb 2009 (Forum)
  Also for some time I have noticed on the inside surface of the top of the coolant reservoir (above the level of the coolant), bubbles or condensation on the plastic surface. After having the coolant changed today it appears that they are still there. Do you have any ideas about this ?
• Ford Focus (1998 - 2004) - 1999 1.8 petrol- coolant question ? 10 Oct 2008 (Forum)
  My question is if I were to renew the coolant now and somewhere down the line the coolant pump packed up, would I have to renew the coolant again with the new water pump or would this be unnecessary again ? Thanks
• VW Polo Coolant has gone brown? 11 Jul 2007 (Forum)
  Hello, In order to diagnose an issue with the temperature gauge on my 1.4 VW Polo 1996 N-Reg not working I had cause to replace the thermostat. This meant having to drain the coolant. I don't know what was in it (I bought this car recently ) but it was pink in the coolant tank but blue when it came out of the radiator hose - sounds weird. Ha. Anyway, I used Halfords Ready Mixed Coolant to fill the cooling system back up but I'm now worried because the coolant looks brown inside the tank and I vaguely recall brown colours being bad news as far as VW coolant goes.
• Ford Galaxy - Coolant warning light 9 Jun 2012 (Forum)
  I was driving my car close to home when a Stop, Check Coolant warning light appeared. I arrived home ok. When the engine cooled down i checked the coolant level on the expansion tank and the coolant level was just below Min. I filled the coolant to just below the Max.I took the car for a drive until the engine reached its normal driving temperature and when the car reached 10 miles the Stop, Check Coolant warning light appeared.
• 2003 NISSAN MICRA III K12 - Sensor to measure coolant temperature 25 Sep 2019 (Forum)
  I would like to install a small digital temperature sensor in the car engine compartment to get an approximate value of the coolant temperature. Other than actually placing the sensor in the coolant itself, what external part of the engine would give the nearest reading to the coolant temperature?
• Golf Mk4 Coolant Warning 8 Jan 2012 (Forum)
  Golf Mk4 Cooant warning message appeared this morning but coolant level perfectly OK. The sensor appears to be two stainless rods immersed it the coolant header tank. Does this just measure that there is or is not coolant or is it really smart and measures the resistance across the pins to establish the presence of the correct proportion of anti freeze.
• C5 coolant change 26 Nov 2004 (Forum)
  Can anyone tell me when/if the coolant should be changed in a C5? The maintenance schedule is not easy to understand and I have yet to find any mention of actually changing the coolant in this car. I checked the coolant level recently and, whilst the level is OK, the colour is a dirty brown, which doesn't look right to me.