During this cold snap my 2003 Vectra 2l Dti has been running very cold, at most times below the 80 mark on the temp guage and it takes a long time for the heater to warm up. I am told that this is usual (this being my first diesel car) but I wondered if there is a quick, easy, and above all, safe way for me to increase the temperature that the engine runs at ?
Or should I just accept that is what diesels do and wait for the summer ?
Thanks
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