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Discussion Starter #1
I know that the Cobalt 2.2 Ecotec engine is tuned for 87 octane. The only question I have is I live in Phoenix Arizona and the temperatures are constantly above 100 degrees. Would I benefit from running 89 octane to gain a bit more power and MPG?
 

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^ x2 wont make a difference. if anything, cooling system mods would help
 

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what are some cooling system mods
 

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my coolant runs at like 220 sometimes..

But that's only when i'm sitting in traffic and it's 105 outside,
normal.
 

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my coolant runs at like 220 sometimes..

But that's only when i'm sitting in traffic and it's 105 outside,
normal.
all cars run better at operating temp. but 220 is on the high side. how often do you see over 220
 

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like i said, only when i sit in traffic and it's 105 outside.
 

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Discussion Starter #11
My 2.2 is usually around 194 degrees, and i live in Phoenix. I was thinking about possible adding a coolant additive from royal purple that worked pretty well with my Saab.
 

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my car used to sit at 88 degrees celcius on the dot. now with the new thermostat it sits at 94 degrees on the regular.
 

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194 is good. Water wetter is good stuff, idk if it will work with dexcool though
 

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between 188-197 is normal operating temp for the n/a 2.2L ecotec engine. If your hitting 220+ not good. You may want to start checking your thermostat to ensure that the wax pellet isn't damaged.
 
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