Choosing the right coolant for your UTV is critical to prevent overheating, corrosion, and engine damage. We researched manufacturer specifications, industry standards (ASTM D3306, ASTM D6210), and aggregated owner feedback from forums and Amazon reviews to compare the top options. Our evaluation focuses on freeze protection, corrosion inhibitors, compatibility with aluminum and copper components, and ease of use. Here are the best coolants for UTVs based on our research.
| Photo | Product | Score | Buy |
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Engine Ice Hi-Performance Coolant Top Pick Propylene glycol, pre-diluted 50/50, -26°F freeze point |
9.2 | 🛒 Check Price |
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Zerex G-05 Antifreeze/Coolant Runner Up Ethylene glycol, concentrate, OAT hybrid, 5-year/150,000-mile life |
8.8 | 🛒 Check Price |
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Prestone 50/50 Prediluted Antifreeze/Coolant Best Value Ethylene glycol, pre-diluted 50/50, -34°F freeze point |
8.5 | 🛒 Check Price |
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EVANS Waterless Coolant Best for Extreme Conditions Waterless, non-toxic, no freeze or boil point (375°F boiling point) |
8.1 | 🛒 Check Price |
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Star Brite StarCool Powersports Coolant Best for Marine/Rust Protection Propylene glycol, pre-diluted 50/50, -34°F freeze point, with rust inhibitors |
7.8 | 🛒 Check Price |
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MotoRad 50/50 Prediluted Antifreeze/Coolant Budget Friendly Ethylene glycol, pre-diluted 50/50, -34°F freeze point |
7.3 | 🛒 Check Price |
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Catrol Radicool Coolant Specialty Pick Ethylene glycol, concentrate, OAT formula, 5-year life |
7.0 | 🛒 Check Price |
1. Engine Ice Hi-Performance Coolant: Top Pick
Engine Ice is a well-known name in the powersports world, and our research confirms its strong performance. The propylene glycol formula is pre-diluted to 50/50, offering a freeze point of -26°F, which suits most UTV riders. Owner feedback consistently highlights lower operating temperatures in trail and race conditions, and the corrosion inhibitors are designed for aluminum and magnesium components common in modern UTVs. The low toxicity is a bonus for those riding in environmentally sensitive areas.
However, the premium cost may not appeal to budget-conscious users, and in extreme cold climates (below -30°F), the freeze protection is less robust than some ethylene glycol options. Riders who need maximum cold weather protection or operate in severe conditions should consider a concentrate or a different formula. Overall, Engine Ice is an excellent choice for most UTV owners seeking reliable, easy-to-use coolant.
- Pre-diluted formula requires no mixing, just pour and go.
- Contains advanced corrosion inhibitors for aluminum and magnesium engines.
- Low toxicity propylene glycol base safer for pets and wildlife.
Pros: Excellent heat transfer and cooling performance.; Ready-to-use convenience with no mixing errors.; Environmentally friendlier than ethylene glycol.
Cons: Premium price compared to traditional coolants.; May not provide the same freeze protection as some ethylene glycol blends in extreme cold.
2. Zerex G-05 Antifreeze/Coolant: Runner Up
Zerex G-05 is a hybrid organic acid technology (OAT) coolant that we found offers excellent durability and corrosion protection. It is a concentrate, so you need to mix it with distilled water, but that allows you to tailor the freeze point to your climate. Owner feedback on forums praises its longevity, with many reporting no corrosion after years of use. It is compatible with the mixed metals in UTV engines, including aluminum, copper, and solder.
On the downside, the need to mix can lead to errors (e.g., using tap water), and the ethylene glycol base is toxic to pets and wildlife. Users who prefer a ready-to-use product or have environmental concerns may want to look elsewhere. But for those willing to mix, Zerex G-05 provides outstanding value and protection.
- Hybrid OAT formula with silicates and phosphates for long-life protection.
- Concentrate allows custom dilution ratio for specific freeze protection needs.
- Compatible with aluminum, copper, brass, and solder components.
Pros: Exceptional long-life corrosion protection for mixed metal engines.; Cost-effective concentrate that can be diluted as needed.; Meets ASTM D3306 and D4985 standards.
Cons: Requires mixing with distilled water, which can be inconvenient.; Ethylene glycol is toxic and requires careful handling.
3. Prestone 50/50 Prediluted Antifreeze/Coolant: Best Value
Prestone 50/50 is a budget-friendly option that we found performs adequately for most UTV applications. It is pre-diluted, so you can pour it directly into the radiator, and it offers a freeze point of -34°F, suitable for most climates. Owner feedback indicates it works well for routine maintenance, and its compatibility with other coolants makes it a safe choice for topping off. It meets ASTM D3306 standards.
However, the corrosion inhibitors are not as advanced as those in premium coolants, so it may require more frequent changes. In our evaluation, heavy-duty users or those in extreme conditions might need a longer-lasting option. But for casual riders and budget-conscious owners, Prestone provides reliable cooling at a low cost.
- Ready-to-use 50/50 pre-diluted formula, no mixing required.
- Corrosion protection for all engine metals, including aluminum.
- Compatible with all colors and types of antifreeze (safe to top off).
Pros: Affordable price point for a pre-diluted coolant.; Widely available at auto parts stores and online.; Good freeze protection down to -34°F.
Cons: Standard corrosion inhibitors may not last as long as premium coolants.; Ethylene glycol is toxic; requires proper disposal.
4. EVANS Waterless Coolant: Best for Extreme Conditions
EVANS Waterless Coolant is a niche product that we evaluated for extreme conditions. Its waterless design means no corrosion, no electrolysis, and a boiling point over 375°F, making it ideal for high-performance UTVs or desert riding. Owner feedback from racers praises its ability to prevent overheating even under heavy load. It is also non-toxic, which is a plus for the environment.
However, the high cost and complex installation (must remove all water, use special flush) make it impractical for most users. It is also not freeze-protected in the traditional sense (it becomes very thick but does not freeze solid), so it may not be ideal for cold climates. We recommend it only for those who need maximum heat tolerance and are willing to invest in the system prep.
- Waterless formula eliminates corrosion and electrolysis.
- Boiling point above 375°F, ideal for extreme heat or heavy loads.
- Non-toxic and environmentally safe.
Pros: Virtually eliminates corrosion and scale buildup.; Excellent for high-temperature applications and racing.; No need to change coolant; lifetime use in some cases.
Cons: Very expensive compared to conventional coolants.; Requires complete system flush and special preparation before use.
5. Star Brite StarCool Powersports Coolant: Best for Marine/Rust Protection
Star Brite StarCool is designed for marine and powersports use, and our research indicates it offers robust rust protection. The propylene glycol formula is pre-diluted and low toxicity, making it a good choice for UTVs used near water or in damp climates. Owner reviews note its effectiveness in preventing corrosion in cooling systems with mixed metals.
However, some users report that it does not lower operating temperatures as much as other coolants, and it is less widely available in stores. For most UTV owners, the standard corrosion protection of other coolants suffices, but those in coastal or high-humidity areas may benefit from StarCool’s extra rust inhibitors.
- Formulated with extra rust inhibitors for wet environments.
- Pre-diluted and ready to use.
- Low toxicity propylene glycol base.
Pros: Enhanced protection against rust and corrosion in humid conditions.; Non-toxic, safer for pets and wildlife.; Compatible with aluminum and brass components.
Cons: May not cool as efficiently as some ethylene glycol coolants.; Limited availability compared to mainstream brands.
6. MotoRad 50/50 Prediluted Antifreeze/Coolant: Budget Friendly
MotoRad 50/50 is a no-frills coolant that we found suitable for budget-minded UTV owners. It is pre-diluted and meets basic industry standards, offering freeze protection to -34°F. Owner feedback suggests it works fine for stock UTVs used in moderate conditions. It is a good option for topping off or for those who change coolant frequently.
However, its corrosion inhibitors are not as advanced, and it may not last as long as more expensive coolants. In our evaluation, owners of turbocharged or heavily modified UTVs should invest in a higher-performance coolant. For basic maintenance, though, MotoRad gets the job done at a low cost.
- Economical pre-diluted coolant for basic cooling needs.
- Corrosion inhibitors for aluminum and copper.
- Compatible with most coolants for topping off.
Pros: Very low price point.; Ready-to-use convenience.; Meets basic ASTM D3306 standards.
Cons: Shorter service life compared to premium coolants.; May not provide adequate protection for high-performance or modified UTVs.
7. Catrol Radicool Coolant: Specialty Pick
Catrol Radicool is a lesser-known coolant that we evaluated for its OAT formula. It is a concentrate designed for heavy-duty use, and its silicated OAT chemistry offers good corrosion protection. Owner feedback is sparse for UTVs specifically, but in automotive applications it has performed well. It may be a viable option for those who want a long-life concentrate.
However, its availability is limited, and the lack of UTV-specific feedback is a concern. The need to mix and the unknown compatibility with some UTV gaskets means we cannot widely recommend it. Only consider this if you have experience with OAT coolants and are willing to test it in your UTV.
- Long-life OAT formula with silicates.
- Concentrate allows custom dilution.
- Designed for heavy-duty diesel and high-performance engines.
Pros: Good long-life protection for mixed metals.; Concentrate is cost-effective if you mix yourself.; Suitable for high-stress engines.
Cons: Less common brand with limited reviews for UTVs.; Requires mixing; no pre-diluted option available.
Frequently Asked Questions
What type of coolant should I use in my UTV?
Most UTVs require a 50/50 mix of antifreeze and distilled water, using either ethylene glycol or propylene glycol. Check your owner’s manual for specific recommendations. We generally recommend a pre-diluted coolant for convenience, but a concentrate allows custom freeze protection. For aluminum engines, look for coolants with silicates or OAT inhibitors.
Can I mix different brands of coolant in my UTV?
It is best to avoid mixing different coolant types (e.g., OAT with IAT) as it can cause gelation or reduce corrosion protection. If you must top off, use the same brand and type, or use a universal coolant that is compatible with all colors. Prestone 50/50 is known for broad compatibility.
How often should I change the coolant in my UTV?
Most manufacturers recommend changing coolant every 2 to 5 years or after a certain number of hours (e.g., 500 hours). Long-life coolants like Zerex G-05 can last up to 5 years. Always follow your UTV’s maintenance schedule and inspect coolant condition annually.
Is propylene glycol better than ethylene glycol for UTVs?
Propylene glycol is less toxic and safer for pets and the environment, but it typically has slightly lower heat transfer efficiency. Ethylene glycol offers better freeze protection and is often more affordable. For most UTVs, both work well; choose based on your priorities for safety vs. performance.
Can I use automotive coolant in my UTV?
Yes, many automotive coolants are compatible with UTVs as long as they meet the same specifications (e.g., ASTM D3306). However, some UTVs may require a specific type (e.g., OAT or HOAT) to prevent gasket damage. Always verify with your owner’s manual.
Our Verdict
After researching and comparing the top coolants, our top pick is Engine Ice Hi-Performance Coolant for its excellent heat transfer, pre-diluted convenience, and low toxicity. The runner up is Zerex G-05 for its long-life protection and cost-effective concentrate. Choose based on your UTV’s specific needs and your budget.
