Join Date: Dec 2009
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So The FNG, are you saying I should use 87 in my stock 600 polaris xcsp?
Ok, I don't know this for a scientific fact, but according to the experts at Snow-Tech magazine in an article they published in the last couple of years, if your sled is tuned for regular gas, it will make more power with regular. Maybe your sled will 'run better' on premium, but you will make less horsepower. They say regular is 'hotter' than premium, and the only reason to run premium is if you have a high compression motor that will detonate with regular.
I run regular in my stock sleds and premium in my high compression overbore shaved head sleds. I'd love to run regular in them too, but they did detonate or 'knock' when I tried it.