Dunkive 2 Pcs Reusable Ethanol Tester E85, Wide Mouth Fuel Pressure Testers Bottle, Gasoline Oil Analysis Kit for E85 Ethanol Levels to Maintain Peak Engine Performance, Clear Results in Minutes

Great kit easy to read and fill.

very easy to use.

Worked great

I chose this kit as it used smaller amount of gas than many. I've been able to determine how much "non-ethanol" gas I need to pump first to clear the line at a station that uses a single delivery hose for delivery. Not that I appreciate paying $1 a gallon over premium 10% ethanol gas. It take 2 gallons get to what I'm buying. The bottles have a more graduated scale than many others too. I would have preferred glass over plastic for a longer reuse life. Ethanol gas is the worst thing ever for gas that is going to be left in small engines including generators. This kit was a small price to pay to protect my farm, motorcycle and vehicles that are stored more than driven.

Works well. Doesn’t seal smell very well, so you might want to use it once at your favorite gas station with flex fuel/e85 and then take it home & store it somewhere with good circulation. Makes the car reek. Cheaper than other options. Spot to fill fits the gas nozzle, so size is good. Plastic might have fogged up somewhat? Giving it 4 stars because of the fogging at the top.