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Discussion Starter · #1 ·
Would I be hurting anything if I run 87 octane? I know it says 91 is recommended but was just wondering.... thanks
 

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I have but not a full tank of it it was a 50/50 mix of 87 and 91 I won't run just 87 but I will mix the 2 to save a couple bucks
 

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Discussion Starter · #3 ·
What could actually hurt the motor by running 87? Just chance of pinging?
 

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No it won't ping thats what the knock sensor is for. I have a 06 600 HO SDI, 87 octane is the best I can get, Fairbanks idea of premium. I have had no problems at all.
 

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look at it like this, 20 cents more per gallon x 10 gallons =$2.00,
fill up 3 times a day at most,= $6.00 more per day to be safe!!
 

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Discussion Starter · #8 ·
I've been trying to run 91 the entire year... but in some towns its not always available..... I haven't noticed a difference between running 87 and 93
 
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