lllateralus Posted June 28, 2012 Share Posted June 28, 2012 OK, we are talking about hot as he** temps here.. like 105-110F outside. So, yea.. I get that it is just plain hot outside. But, other vehicles I have owned in the past have shown no temperature increases in these temps climbing hills. (Ford Expedition 5.4, Superduty 7.3 diesel, Hondas, Toyotas, Nissan Maximas) The subie does not run hot during normal freeway driving, or idling. Its just when climbing hills in these temps. It does NOT heat up to the red, or even near the red, but that needle does rise. Anyone have similar behavior in their subaru, particularly the 3.0R? Link to comment Share on other sites More sharing options...
Kodax Posted June 28, 2012 Share Posted June 28, 2012 Hmmm....how much higher does the needle rise? I do a lot of driving through the mountains and hills in Washington but our temperatures never increases. Maybe check your coolant? Link to comment Share on other sites More sharing options...
lllateralus Posted June 28, 2012 Author Share Posted June 28, 2012 If (say) the needle sits normal at 4/10ths, when it gets hotter the needle will point to 6 or 7/10ths. The coolant is full and green, and the car has 45K miles in pristine condition. I should note that I have only run 87 octane in this car. Link to comment Share on other sites More sharing options...
Kodax Posted June 28, 2012 Share Posted June 28, 2012 You are suppose to run premium in the 3.0R. Maybe give that a try. Link to comment Share on other sites More sharing options...
OneJay Posted June 28, 2012 Share Posted June 28, 2012 The needle on my GT rose a little bit in 105 degree heat while climbing hills last weekend. It never got close to the red though. I just turned off the A/C and drove a bit slower. Link to comment Share on other sites More sharing options...
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