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I just bought a 2007 yfz450 and I'm just wondering what gas I should run. Not sure what the previous owner ran but I would like to know what gas would be best for it.
I'd use premium if it was mine. I've always used premium in all of my ATV's. Never had any issues with bad gas, but I use em, don't let it set for 6 months. It's a high performance motor, not a lawn mower.