Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. What Is Dry Gas?

What Is Dry Gas?

dry gas 1

Dry gas is a very helpful fuel additive that is used to remove water from gasoline and prevent water-contaminated gasoline from freezing. While the solution itself is actually called dry gas, there is one brand of this fluid named Drygas.

Water should never be in the gas tank, fuel lines, fuel injectors, or combustion chamber. There are a number of issues water-contaminated gasoline can bring about:

  • Water does not combust when mixed with air inside of the combustion chamber. This means that if the gasoline going into an engine has too much water in it, the fuel will not burn very well. In some cases this can stall the engine with the watery gas still in the combustion chamber, corroding metal surfaces and generally making a mess of things.

  • Water also has a nasty tendency to freeze when it reaches a temperature below 32 degrees Fahrenheit.

  • Water causes rust and corrosion in the gas tank, metal fittings, and metal lines along the fuel system. This is particularly bad for the fuel system, as some of the debris can make it all the way to the fuel injectors and eventually clog them.

How does dry gas work?

Based on either methanol or isopropyl alcohol, dry gas rids the fuel system of water by binding to the water and then burning it all off in the combustion chamber. Because of alcohol’s extremely low freezing point, it also acts as antifreeze to water-contaminated gasoline.

Different engines have different responses to dry gas and some will run differently with it in the fuel. Dry gas is not really a necessary part of routine maintenance, but if there is any reason to suspect that a vehicle is suffering from water-contaminated gas, especially in the winter, dry gas is an excellent solution.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...


Related questions

Q: Hesitates cracks loses power

Hello. The throttle position sensor could very well cause the symptoms you describe. Since you have had the fuel supply components checked and replaced, this is the next logical component to suspect. If the throttle position sensor checks out, I...

Q: How do I open the fuel tank door?

Before filling up your car with gas, you will need to open the fuel tank door. This is a very easy task: Lift up on the fuel filler door opener, which is located underneath the driver’s seat, directly next...

Q: How can I be sure its my fuel pump that went out not my fuel filter acting up

The first thing to do when it stalls is to check the fuel pressure. If the pump is bad then the pressure will be zero. If the problem is the filter then the pressure would be good but the volume...