My problem is with a 93 Geo Prizm, 80K miles. I was out for about an hour yesterday and noticed the dashboard temperature gauge stayed at cold the entire time. After some searching I get the impression I need a new thermostat. Is that the likely cause? Is it safe to continue driving like this?
If it's the thermostat, is this difficult to change? (Not too experienced, most ambitious project was an alternator change.) I'm going to track down a Chilton's guide today.
Also, I've read this requires a coolant change. If that's the case, what should I use to replace it? I'm in the DC area.
Any help is appreciated. Thank you.
MG