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Old 04-28-2009, 02:56 PM   #4 (permalink)
cfg83
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Join Date: Dec 2007
Location: Southern California
Posts: 5,864

1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
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zman -

For my 1999 Saturn S-Series, the upper limit seems to be 179 degrees F. This was documented by lovemysan. I think the hottest I have ever been is 166 degrees F. I like it below 150 degrees F so that I don't have to think about it.

Currently I am running with 91 octane to avoid the risk of ping/knock. However, when I ran 87 octane during the height of the gas prices, I never noticed any problems. However, my HAI configuration was probably topping out at 135 degrees F at that time.

CarloSW2
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