REC90 is an ethanol-free blend of 90 octane unleaded gasoline, developed for use in recreational / marine engines, which can be damaged by the ethanol it contains. It is also useful in some aircraft  and automotive engines, although it has not been extensively tested on cars and trucks.
The short answer is no, ethanol-free gasoline is not bad for your car. Most cars today can run on ethanol gas blends up to E15 (15% ethanol) and ethanol-free gasoline. And gasoline cars can easily process up to E85 (85% ethanol).
To find out if there is ethanol in the gas:
- On a six to seven inch long test tube or bottle of olives, draw a solid line about three inches from the floor.
- Fill water up to this line, then fill the hose to the top with gasoline.
- Cover the tube, mix and let it rest.
In most cases, ethanol won’t affect you much. Yes, you can get a little more mileage and performance with pure gasoline, but not enough to offset the cost of buying ethanol-free gasoline when it’s available in your area. According to the US government, all gasoline cars are safe to use E10.What’s Clean is a website dedicated to one simple task: listing gas stations in the United States and Canada that sell ethanol-free gasoline.
Many cars, motorcycles, boats, planes, and tools have engines that run less well or parts that degrade when running on gasoline that contains ethanol.
Some people refuel their small engines with premium gasoline based on the misconception that all premium gasoline is ethanol-free or that the engine runs better. In fact, 95% of all gas (common, medium, and high quality) sold in the United States contains ethanol.
At room temperature and body temperature, ethanol can be in liquid or gaseous form. Liquid: Individual ethanol molecules are connected by two types of chemical forces: hydrogen bonds and van der Waals forces.
Currently it is not absolutely necessary that renewable fuel (eg ethanol) be contained in unleaded petrol (97 degree petrol). Esso Premium unleaded petrol (Synergy Supreme + unleaded 97) is free of ethanol (except in Devon, Cornwall, Teesside and Scotland).
Welcome to the definitive list of gas stations that sell pure ethanol-free gasoline in the United States and Canada!
Removing ethanol from gasoline is easier than it looks. So, if you add water to gasoline and shake it vigorously, the ethanol will stick to the water. Gasoline and water / ethanol form two different layers after sitting for a while and you can dispose of ethanol / water in different ways.
Ethanol and your boat
By mixing ethanol and gasoline in a ratio of 85 to 15% (E85), mixed fuel is nearly 30% less effective than pure gasoline. Ethanol is comparable in terms of acceleration, power, and travel performance, but the miles of ethanol per gallon are lower than pure gasoline.
Ethanol-free gasoline is more of a luxury fuel, said analyst Patrick DeHaan, as the cost of ethanol-free gasoline can range from 30 cents to over a dollar more per gallon, adding that ethanol costs more. . Miles.
The higher the ethanol content, the higher the octane number. The octane number for E15 (15% ethanol) is 88 octane and E85 (85% ethanol) is 108 octane. Also, as Argonne National Laboratory states, ethanol reduces greenhouse gas emissions by 34 to 44 percent compared to gasoline.
Older cars can run on unleaded gasoline, but avoid ethanol.
Since ethanol is used to oxygenate the fuel mixture, which allows the fuel to burn more completely and thus produce cleaner emissions, the use of fuel has clear advantages on air quality.
Fuel conditioning may therefore be the only option. They are economical and should stabilize the fuel mixture and control water absorption without using alcohol in the formulation. Adding a fuel additive or using ethanol-free gas can be of great benefit.