Then you could save a dollar fifty every time you fill up..
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Then you could save a dollar fifty every time you fill up..
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HA HA HA I don't think lance was talking about using a lower grade fuel , just that he took the sticker off !! All in all if you only need 87 octane and you run 91 it doesn't only coast the extra $1.50 per fill up bet in some cases can make you vehicle run worse than if you used the 87 octane !!
Nobody has touched on elevation affecting dynamic compression. Higher elevations have lower atmospheric pressure effectively lowering your compression. If your engine is forced inducted, this rule may not apply depending on compressor size and type.
For this reason, I run the recommended 91 octane at sea level up to 4000' and 87 above 4000'. Can Am runs an open loop fuel/spark management system that will sense and retard timing in the event of spark knock. Anyone know if Polaris do this too?