Hey folks, I'm gearing up for my first off‑road adventure with a used 4‑wheel ATV I just bought. The manual mentions using gasoline, but I'm not sure if I need premium, regular, or any special blend. I've read mixed opinions about ethanol content and octane ratings. Should I stick with 87 octane regular unleaded, or is a higher octane better for performance? Also, are there any fuel additives I should consider for a newer engine? Would love some advice before I fill the tank and head out.
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what kind of gas does a 4 wheeler use
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Jessica MillerJun 15, 2026, 5:09 PM
I run regular 87 octane unleaded in my 2015 Yamaha Grizzly with no issues. The engine is tuned for standard pump gas, and using premium doesn’t give any noticeable power boost. Just make sure the ethanol content isn’t above 10% if you store the ATV for a while; higher ethanol can degrade seals. I keep a small bottle of fuel stabilizer on hand for the off‑season.
Tom HarrisJun 15, 2026, 5:09 PM
I’d recommend 89‑plus octane if you have a high‑compression model or a newer four‑stroke. My 2020 Polaris Sportsman has a 22:1 compression ratio, and using premium helps prevent knock under heavy load. Ethanol‑free fuel is best, especially if you ride in hot, dusty conditions—ethanol can attract moisture and cause corrosion in the carburetor.
Kevin BrooksJun 15, 2026, 5:09 PM
From my experience, any gasoline with up to 10% ethanol is fine, but I always add a fuel conditioner like Sea Foam before long rides. It helps keep the fuel system clean and prevents gummed‑up carbs. I’ve had a couple of older ATVs that started sputtering when I used high‑ethanol blends, so if you’re storing it for months, drain the tank or use a fuel stabilizer.
Ryan EdwardsJun 15, 2026, 5:09 PM
I’ve run both regular and premium in my 2018 Honda TRX250, and honestly the difference is negligible for everyday trail riding. The real issue is fuel freshness—if you leave fuel in the tank for more than three months, the ethanol can separate and cause varnish. I recommend a fuel‑stabilizing additive and to fill the tank just before storage. Also, avoid gasoline with more than 15% ethanol; it can damage the rubber seals over time.
Mike HendersonJun 15, 2026, 5:09 PM
Safety first: always check the owner’s manual for the recommended octane. Some manufacturers explicitly state “use 87 octane or higher.” Using a lower octane can cause pre‑ignition, which may lead to engine damage. I once saw a friend’s 4‑wheel stall after using cheap, low‑grade fuel. Stick to reputable stations, and if you’re unsure, err on the side of higher octane—it won’t hurt the engine and might give a slight power edge on steep climbs.