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whats the optimal water temp? i'm debated on whether to get a 180 degree high flow thermostat, or just stick with the stock one, which i belive opens around 195 or so.
 

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ma70-7m=1JZ
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I use a 180 t-stat and my car runs at 180 all the time exept on some mountain highway's it will sometimes go up to 210. Now in the winter it will barely even get to 180. I would say if you drive alot in hot weather, get the 180. As you know 7M's dont like to get hot.
 
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