UK Auto Repair Questions?
Good afternoon and thank you for your question, my name is ***** ***** I am a fully qualified vehicle technician with over thirty years in the trade, hopefully I can help.
Whilst I would agree that sludge in the cooling system may prevent the heater from reaching an optimum temperature, I would not expect this to slow the rise in engine temperature in normal driving and because of this I would agree that the thermostat should be changed.
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