is this one time use? do I need to add other things other then fuel and water before the test?

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.

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.

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.

does this test diesel fuel?

No, it tests for alcohol percent in gasoline.

What if the gasoline your testing has sta-bil 22264 360 protection in it? will this still work?

I honestly can't say but I would think so. Google your best bet for a question like this

Rev X E85 Super Tester Reusable Gasoline Ethanol Testing Kit

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

C$1658

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Nicaragua.

Secure transaction

Description

⛽ Know your fuel, save your ride — test smarter, drive safer!

TRUSTED TOP RANKED - Join thousands of savvy drivers with a 4.7-star rated, best-selling fuel tester.
ENGINE SAFE ASSURANCE - Avoid costly damage by verifying fuel compatibility before every fill-up.
ECO FRIENDLY REUSABILITY - Test again and again with a durable, reusable bottle—no waste, no hassle.
PRECISION ETHANOL DETECTION - Instantly identify E10 to E90 blends to protect your engine.
CLEAR DURABLE INSTRUCTIONS - Laminated guide ensures easy reading and longevity—never lose your test know-how.

The REV X E85 Super Tester is a reusable gasoline ethanol testing kit designed to accurately measure ethanol levels from E10 to E90. Its laminated, fade-proof label and easy-to-use bottle ensure reliable, repeatable testing that helps prevent engine damage and optimize fuel efficiency. Highly rated and trusted by thousands, it’s an essential tool for any driver using ethanol-blended fuels.

Specifications

ASIN	B073HLSVHX
Best Sellers Rank	#6,624 in Automotive ( See Top 100 in Automotive ) #7 in Fuel Pressure Testers
Brand	REV X
Customer Reviews	4.7 4.7 out of 5 stars (2,407)
Date First Available	January 16, 2018
Is Discontinued By Manufacturer	No
Item Weight	0.634 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

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.