Funny thing is that I don't think thermostats are what they used to be. There has been alot of threads on relatively new thermostats dying prematurely.
I bought mine at the local european shop (Kerr Automotive), but I'd think the most important thing is to get a new one in there.
I also had concerns that the flush would damage the thermostat. It's got a wax pellet in it that melts at a certain temp (I think that is how they work). Maybe the flush detergent would dissolve it. I was also worried about oil contamination of the thermostat. My car blew a head gasket before I bought it. Although it has been fixed, the dumb mechanic didn't flush and de-oil the cooling system. I think the oil made a mess of the old thermostat.
I'm going to buy another thermo to keep in the car with me. I've just heard too many people talking about premature failure.
Sholin
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What else, '73 MB 280 SEL (Lt Blue)
Daily driver: '84 190D 2.2 5 spd.
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