| OK. So a few weeks ago I did the fan delete, installed a new water pump, underdrive pullies, and flushed my radiator. I also installed a new aluminmun thermostat housing. I did all this at about midnight in the cold so I was a little careless. When i installed the new thermostat for the fan delete i didn't take note of how it is supposed to be installed, i just put it in there and replaced the housing. A few days later I come to find out that that is an arrow on the thermostat that is supposed to be pointing upwards to allow for correct opening and closing.
So far everything has been running perfectly. No overheating and the thermostat is opening and closing keeping the engine running at optimum temperature. I know this because my previous thermostat was busted and always stayed open and my engine temp would fluctuate up and down with the ambient temp and speed. My only hesitation on opening it back up and making sure it is correctly set is I have to drain my entire coolant system again, which means $20 for BMW coolant and $20 for water wetter. Do you guys think i really need to do this if i haven't had any problems thus far?
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