Thread: 2014 Scion frs engine run 'hard'...
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Old 08-14-2015, 03:15 AM   #2
N1rve
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Quote:
Originally Posted by guardianactual View Post
Bought this a few days ago... Put 93 in it ran fine. 110 miles on the odometer no issues till the dealer offered me a fill up and dumped 87 in it. Now it runs "hard" idling fast and harder than before...

Is it the low octane?
Yes, FRS minimum octane is 91.
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