On 23/11/2010 09:18, GT wrote:
> > wrote in message
> ...
>> On 22/11/2010 15:45, GT wrote:
>>> > wrote in message
>>> ...
>>>> On 22/11/2010 09:35, GT wrote:
>>>>> > wrote in message
>>>>> eb.com...
>>>>>> I completely forgot to ask them to change the thermostat at my last
>>>>>> service. The temp gauge sits around or below 70 and should be at 90.
>>>>>> In
>>>>>> the
>>>>>> recent cold weather, it has hardly gone over 65 and it takes about 20
>>>>>> minutes before proper hot air comes through to the cabin. Its always
>>>>>> been
>>>>>> low, but it seems to be getting worse. The GT I had last month was
>>>>>> warm
>>>>>> within a few minutes and blowing hot air at me after about 3 miles!
>>>>>>
>>>>>> Mine's a 2002, 156 Petrol 2.0 JTS. Anyone know where the thermostat is
>>>>>> and
>>>>>> how easy the job is? Should I even consider changing it myself?
>>>>>
>>>>> One more thing - coolant. Drain and replace completely? Replace with
>>>>> water/coolant mixture or pure coolant? Red or Blue? Halfords own cheap,
>>>>> or
>>>>> expensive stuff? ...
>>>>>
>>>> Probably best to drain, but don't (in theory) let it go down the drain.
>>>>
>>>> Halfords normal, mixed as per spec on side of bottle depending on how
>>>> cold
>>>> you think it'll get this winter.
>>>>
>>>> If red comes out, you'd better put red in, and vice versa
>>>
>>> Dilute with tap water or de-ionised stuff?
>>
>> I always use tap water. De-ionised was for batteries innit?
>
> I meant distilled, not de-ionised, that is for batteries - oops!! I read a
> while ago that you should use distilled water to top up the coolant because
> it lasts much longer and is rarely changed these days, so distilled water
> does less damage when left in the system for extended periods..
>
>

I'd love to see any evidence for that. One of the whole points of
coolant is that it protects your engine

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