New thermostat as PM - most excellent!
 

Today I changed my coolant and had gotten a new behr thermostat to put in while the coolant system was drained. I thought the one that was in there was just fine but I put in the new one as preventative maintenance while the system was drained. Made a noticable difference; comes up to temperature much much quicker and it runs hotter. Before it had always run just below 80* which I thought was normal but after reading some archived posts to make sure I was approaching the job correctly I saw that it should be up around 90*. The new one gets it there and quicker too.