Been running ethanol free gas in my quads and lawn tractor for 2 years now religiously. In a hurry to take the kids riding today, I ran to the corner and filled the gas cans with cheap 87 octane gas. My daughters 2008 Sportsman 300 died on the trail and we had to tow it back almost 2 miles. Just did oil change a month ago and new NGK plug. Been running great until I put the cheaper gas in today. Could the cheaper gas be the easy explanation here ?? Tomorrow I’ll siphon it out and never run regular 87 again.