What Fuel to Use in Your UTV or ATV

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87 Octane vs. 93 Octane

Should You Run Regular or Premium Gas in Your Ride?






Does Octane Matter in Your ATV or UTV?

If you're new to riding, you’ve probably asked this simple question at the pump:
“Should I use regular gas (87) or premium (93) in my UTV or ATV?”

The answer? It depends — on your engine, your riding style, and what your owner’s manual says.
This guide breaks down what octane actually does, whether premium fuel is worth the price, and when it can actually make a difference in your ride.

⛽ What Is Octane Rating, Anyway?

The octane rating (87, 89, 91, or 93) is a measure of a fuel's resistance to “knocking” or pre-detonation.
Higher octane fuels are more stable under high compression and ignite more precisely when the spark plug fires.

OctaneCommon NameUsed For
87RegularMost stock ATVs & UTVs
89Mid-GradeSome performance engines
91–93PremiumHigh-compression or tuned engines

Knocking = uncontrolled combustion that can damage your engine over time.

✅ When 87 Octane Is Perfectly Fine

Most stock ATVs and UTVs are tuned to run just fine on 87 octane.
Unless your owner's manual says otherwise, this is the best fuel for:

  • Recreational riders

  • Trail cruising

  • Stock engines with normal compression

Examples:

  • Polaris Sportsman 570

  • Honda Rancher

  • Yamaha Wolverine

  • Can-Am Outlander

👉 Pros of 87 Octane:

  • Cheaper and widely available

  • Runs clean in most stock engines

  • No horsepower difference in low-compression engines

🏁 When 91 or 93 Octane May Be Better

If your machine has a high-compression engine, is turbocharged, or has been performance-tuned, your UTV or ATV might require premium fuel.

Use 91–93 octane if:

  • Your manual specifically recommends it

  • Your machine is turbocharged (e.g., RZR Turbo)

  • You’ve upgraded the ECU or ignition timing

  • You notice knocking or poor performance on 87

Examples:

  • Polaris RZR XP Turbo

  • Can-Am Maverick X3

  • High-performance side-by-sides

  • Built racing machines or tuned setups

👉 Pros of 91/93 Octane:

  • Prevents knock under high load

  • Safer for tuned or turbo engines

  • May improve throttle response in some cases

🧪 Will Premium Fuel Make My UTV Faster?

Only if your engine is designed or tuned for premium.

Using 93 octane in an engine made for 87 won’t increase horsepower or speed — you’re just paying more at the pump for no benefit.

In fact, it could:

  • Make cold starts harder

  • Leave carbon buildup

  • Waste money long-term

💡 Use the octane your machine is built for. More isn’t always better.

🚨 What Happens If You Use the Wrong Fuel?

Using 87 in a machine that requires 91+:

  • Engine may knock or ping

  • Lower performance

  • Possible long-term engine wear

Using 91 in a machine built for 87:

  • No added benefit

  • Might run cooler or slower

  • Wasted money at the pump

📖 How to Know What Octane to Use

  1. Check your owner’s manual — always the best source

  2. Look for compression ratio (higher than 11:1 may need 91+)

  3. If you're unsure, ask a dealer or stick with 87 unless told otherwise

⚙️ Bonus Tip: Ethanol Blends (E10, E15, E85)

Avoid anything above E10 ethanol unless your machine is flex-fuel rated. Ethanol can:

  • Attract moisture

  • Cause corrosion

  • Break down fuel lines over time

⛔ Never use E85 in standard UTV/ATV engines.

🧭 Final Verdict: Which Gas Should You Use?

Fuel TypeUse It If...
87 OctaneStock engine, trail riding, casual use
91/93 OctaneTurbocharged, tuned, or high-performance engine
Ethanol-Free Gas (if available)Best for long-term storage or premium care

For most riders, 87 octane is perfect — don’t waste your money on premium unless your machine calls for it.

🔧 Coming Soon:



Disclosure: This post may contain affiliate links. I may earn a commission if you purchase through them, at no extra cost to you.

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