So I'm thinking this might be a good time to replace the thermostat as well since I'm sure it is original as well. I see they sell them alone or with a housing. I assume it makes sense to get one with the whole housing as they are not too expensive ($25 or so). I found a part number of 112 203 02 75. Is there more than one temp rating thermostat that I need to be aware of? The ones I see are listed as 87c (or 188 degrees).