--- product_id: 60963009 title: "REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit" price: "108 zł" currency: PLN in_stock: true reviews_count: 13 url: https://www.desertcart.pl/products/60963009-rev-x-e85-super-tester-reusable-gasoline-ethanol-testing-kit store_origin: PL region: Poland --- # Accurate ethanol % detection Laminated, fade-proof instructions Reusable testing bottle REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit **Price:** 108 zł **Availability:** ✅ In Stock ## Summary > ⛽ Know your fuel, own the road — test smarter, drive safer! ## Quick Answers - **What is this?** REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit - **How much does it cost?** 108 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/60963009-rev-x-e85-super-tester-reusable-gasoline-ethanol-testing-kit) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **User-Friendly Design:** Clear, laminated instructions ensure no guesswork—test confidently every time. - • **Eco-Smart Reusability:** Sustainable design lets you test fuel repeatedly without waste or extra cost. - • **Engine-Safe Assurance:** Avoid fuel system corrosion and mileage loss by verifying ethanol levels before every fill-up. - • **Trusted by Pros & DIYers:** Top-rated and widely recommended for reliable, on-the-spot ethanol testing. - • **Precision Ethanol Readings:** Instantly identify E10 to E90 blends to protect your engine from costly damage. ## Overview The REV X E85 Super Tester is a compact, reusable gasoline ethanol testing kit that accurately measures ethanol content from E10 to E90 blends. Designed to protect engines from ethanol-related damage and optimize fuel efficiency, it features laminated, fade-resistant instructions and a durable testing bottle for repeated use. Highly rated and trusted by automotive professionals and enthusiasts alike, this tester ensures you never fuel blindly again. ## Description Product description The Ethanol Testing Kit by REV X is an economical and easy-to-use tool to verify the percentage of Ethanol Alcohol in gasoline. Over 95% of the Gasoline sold to the general public contains up to 20% of Ethanol Alcohol. Therefore, the only way to truly protect your investment is to know if ethanol alcohol is present in the gasoline you are purchasing and, if so, at what percentage. The REV X Super Tester provides the average person with an economic tool to measure and test fuel for proper ethanol levels. Ethanol is Corrosive Ethanol, like all alcohol, is very corrosive and hygroscopic (attracts and absorbs water from the air and its surrounding). High amounts of this highly corrosive mixture of water and ethanol will corrode all fuel system components not designed for it. Besides the corrosive nature, the increase in water will begin to rust out the top of gas tanks, including in warm-weather climates that generally do not have rust issues. Ethanol Can Damage Fuel Systems Ethanol's ability to attract and absorb liquids prevents the natural lubricants in gasoline from doing their job, causing all non-alcohol resistant parts like rubber and plastic to dry out, crack and eventually fail. High oxygen levels in ethanol-blended fuels cause fuel to decay much faster, and if left to sit, that decay leaves deposits such as varnish and sludge. The sediments left by the decaying ethanol-blended fuel will clog fuel filters, fuel injectors, carburetors, and fuel lines. Making your engine hard to start, idle rough, stall, and in extreme circumstances, engine failure. Ethanol Decreases Fuel Mileage High oxygen levels in ethanol cause fuel to burn much faster than fuel without ethanol. This means more fuel is needed to produce the same amount of power. However, ethanol-blended fuels will generate more horsepower. However, they do so at a cost. That cost is seen at the pump with lower miles per gallon. Ethanol Decreases Fuel Life Ethanol increases the octane level in your fuel. Because of this, the base gasoline used to mix E10, E15, or E20 starts at a lower octane level. The ethanol then increases the octane level. As a result, ethanol-blended fuels will begin to decay in as little as two months due to ethanol evaporating faster than gasoline, leaving behind the much lower octane base stock. This is a severe problem for boats, lawnmowers, and other power equipment that do not get used as frequently as your car. In addition, most small engines today are not built or designed for ethanol and have much smaller fuel system components. These smaller components are much more susceptible to ethanol damage at a much faster rate. REV X Super Tester Instructions 1: Add Water Remove cap and fill with water to the water fill line. 2: Fill With Gasoline Carefully fill with gasoline to the gasoline fill line. 3: Shake Well Reapply cap & shake the bottle until contents are fully blended (or suspended). About 10 seconds. 4: Read the Results Rest on a flat surface and let the contents settle out of suspension. Look for the separation between the two liquids and read the results. Review: Easy to read fuel tester - Simple, well marked, easy to read and it does all the work for ya Review: Handy tool for checking E blends - Makes it easy to test and get an accurate ethanol percentage when mixing different blends. Works well, just wish the cap opening was a little larger to pour into. Still a solid and reliable tester. ## Features - Test your fuel for proper ethanol levels to ensure it does not damage your engine. Test kit also tests for e85. - Simple test to discover the percentage of ethanol alcohol in gasoline. With readings of e10, e15, e20, e25, e80, e85 and e90 - High levels of ethanol could damage your fuel system and lower your fuel mileage. - Ethanol can damage motors not equipped or designed to use it, test your gasoline first. - Easy to read label and instructions that is laminated to prevent fading or the ink rubbing off. Testing bottle can be reused over and over. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B073HLSVHX | | Best Sellers Rank | #4,645 in Automotive ( See Top 100 in Automotive ) #4 in Fuel Pressure Testers | | Brand | REV X | | Customer Reviews | 4.7 4.7 out of 5 stars (2,373) | | Date First Available | January 16, 2018 | | Is Discontinued By Manufacturer | No | | Item Weight | 1.06 ounces | | Item model number | ST0501 | | Manufacturer | Rev-X Products, Inc. | | Manufacturer Part Number | ST0501 | | Model | REV-X Super Tester | | OEM Part Number | ST0501 | | Product Dimensions | 1.5 x 1.5 x 6 inches | ## Images ![REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit - Image 1](https://m.media-amazon.com/images/I/61UA3NP7ICL.jpg) ![REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit - Image 2](https://m.media-amazon.com/images/I/81gdt6IhdOL.jpg) ![REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit - Image 3](https://m.media-amazon.com/images/I/81ZsCn3TeNL.jpg) ![REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit - Image 4](https://m.media-amazon.com/images/I/81Cv84HW1BL.jpg) ![REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit - Image 5](https://m.media-amazon.com/images/I/71nOLW9E4OL.jpg) ## Questions & Answers **Q: is this one time use? do I need to add other things other then fuel and water before the test?** A: You can use it many times. It’s really easy to use Just add water to the water line mark the fuel on top of it. Shake for about 10 seconds and then let stand for about 10 seconds. You will have your result. Nothing else needed for this test. **Q: How can a plastic bottle with just simple graduations cost so much? It cannot cost more than $0.35 a piece to make this thing.** A: The graduations are written on tape and then stuck on the bottle. I can see a price tag of maybe $3.95 not $14.95 like I paid. But it does work. **Q: does this test diesel fuel?** A: No, it tests for alcohol percent in gasoline. **Q: What if the gasoline your testing has sta-bil 22264 360 protection in it? will this still work?** A: I honestly can't say but I would think so. Google your best bet for a question like this ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to read fuel tester *by P***S on April 29, 2026* Simple, well marked, easy to read and it does all the work for ya ### ⭐⭐⭐⭐⭐ Handy tool for checking E blends *by M***E on October 26, 2025* Makes it easy to test and get an accurate ethanol percentage when mixing different blends. Works well, just wish the cap opening was a little larger to pour into. Still a solid and reliable tester. ### ⭐⭐⭐⭐⭐ Good ethanol testing device *by C***L on December 24, 2023* I saw this used on the Chickanic YouTube channel and purchased it. It is simple to use, just add water to the indicated level and fill the remainder with the gas being tested, shake vigorously, and let set for several minutes. If the water is above the level it was originally filled to, there was ethanol in in the gas and the new level shows the percentage. This happens because that the ethanol in the gas joins with the water and increases the apparent water level. If you purchase 'ethanol free' gas from a pump that does not have a dedicated hose for that gas, you get whatever was in the hose and pump (up to 1/3 gallon) of non ethanol free gas delivered to your fuel container before the ethanol free gas is delivered. ## Frequently Bought Together - REV X E85 Super Tester - Reusable Gasoline Ethanol Testing Kit - [2-Pack] Reusable Ethanol Testing Kit - Wide Mouth Fuel Test Bottle for E85 and Ethanol Levels - Fewer Spills and Clear Results in Minutes - Test Hundreds of Times - Two Ethanol Test Bottles Included --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/60963009-rev-x-e85-super-tester-reusable-gasoline-ethanol-testing-kit](https://www.desertcart.pl/products/60963009-rev-x-e85-super-tester-reusable-gasoline-ethanol-testing-kit) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-21*