If you're running E85 fuel in your vehicle, this testing kit is pretty much essential gear. The REV X E85 Testing Kit lets you accurately measure the ethanol content in your gasoline, which is super important for tuning and making sure your engine is running optimally. Here's how it works - you fill the bottle with water up to the water fill line, then add your E85 gasoline up to the gasoline fill line. Put the cap on tight (so nothing leaks), shake it up really well until everything's mixed, then let it sit on a flat surface for about 5 minutes. As it settles, the ethanol will separate and appear above the water fill line but below the gasoline layer. The volume above the water line shows you the total percentage of alcohol/water in your fuel. The label is laminated so it won't smudge or wear out, and it's easy to read for ethanol levels from E60 all the way to E100. When you're done testing, just pour out the contents (dispose of gasoline properly - don't pour it back into your tank or gas can!), let it air dry, and it's ready for next time. This reusable design means you only buy it once but can test as often as you need. Whether you're a performance enthusiast, mechanic, or just want to verify your fuel quality, this simple tool gives you accurate results without expensive equipment.
Free 30-day returns 
Free 30-day returns
