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About this product

The KWI Ethanol Testing Kit is a simple, affordable tool that tells you exactly what's in your fuel before it goes into your engine — whether you're running E85 for maximum power or pump gas and want to know how much ethanol you're actually getting.

If you're running E85, ethanol content varies significantly from station to station and season to season. Too low and you're not getting the power and octane you're tuned for. Too high and you risk running lean. The KWI Ethanol Tester gives you a quick, accurate read of ethanol percentage so you know exactly what you're putting in the tank before you make a run.

For pump gas users, most fuel sold today contains up to 20% ethanol — and that matters. Higher ethanol content means reduced fuel efficiency, faster fuel decay in stored equipment, and increased corrosion risk in fuel system components not designed for it. Ethanol is hygroscopic, meaning it attracts and absorbs water — leading to clogged filters, injectors, carburetors, and fuel lines over time. The KWI Ethanol Tester helps you find the cleanest fuel available and avoid the problems that come with high ethanol blends in performance and small engine applications.

Why it matters

You can't tune for fuel quality you can't measure — this kit tells you exactly what you're working with.

E85 ethanol content varies by location, season, and supplier. Pump gas ethanol content varies just as much. The KWI Ethanol Testing Kit gives you a fast, accurate reading before you fill up — so your tune stays dialed in, your fuel system stays protected, and you're never guessing what's actually in your tank.

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Product Info

The KWI Ethanol Testing Kit is a simple, affordable tool that tells you exactly what's in your fuel before it goes into your engine — whether you're running E85 for maximum power or pump gas and want to know how much ethanol you're actually getting.

If you're running E85, ethanol content varies significantly from station to station and season to season. Too low and you're not getting the power and octane you're tuned for. Too high and you risk running lean. The KWI Ethanol Tester gives you a quick, accurate read of ethanol percentage so you know exactly what you're putting in the tank before you make a run.

For pump gas users, most fuel sold today contains up to 20% ethanol — and that matters. Higher ethanol content means reduced fuel efficiency, faster fuel decay in stored equipment, and increased corrosion risk in fuel system components not designed for it. Ethanol is hygroscopic, meaning it attracts and absorbs water — leading to clogged filters, injectors, carburetors, and fuel lines over time. The KWI Ethanol Tester helps you find the cleanest fuel available and avoid the problems that come with high ethanol blends in performance and small engine applications.