Hello All. I want to change the thermostat in my 1987 Volvo 240DL(107,000 miles). I understand I have choice of 2 different ones : One is 190 degrees F and the other is 197 degrees F . I am in central NJ. A hot summer day here would be about 95 degrees F and a cold winter day about 8 degrees F . Since it doesn't get all that hot here I am inclined to go with warmer 197 degree F thermostat. Is this correct choice ?? Next question is I was told that I don't have to drain out coolant(or if I do drain I don't have to drain very much out)to change thermostat since it is up high. Is this true ?? Thanks in advance for your replys and advise.
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