Skip to Content

Honda Pressure Washers Use This Type of Gas (Get It Right)

Often the primary reason for experiencing a starting or running problem is caused by running the wrong type of gas or old gas through your pressure washer.

A Honda pressure washer requires regular unleaded gasoline with a minimum octane rating of 87 and a maximum ethanol content of 10%.

Always work in a well-ventilated area when refueling your pressure washer, preferably outdoors. Allow the engine to cool for a few minutes. Slowly remove the gas cap and take caution because the tank may be under pressure.

When refilling the fuel tank, don’t fill it completely full. You must leave a little room for expansion. Follow all safety precautions found in the Honda operator’s manual to minimize injury.

This post may include affiliate links. Purchases made through these links may provide a commission for us, at no extra cost to you. As an Amazon Associate, we earn from qualifying purchases.

Follow all safety instructions provided in your equipment operator’s manual before diagnosing, repairing, or operating. Consult a professional if you don’t have the skills, or knowledge or are not in the condition to perform the repair safely.

Choose the Right Gas for a Honda Pressure Washer

Fuel stations are offering many types of fuel today. It can be confusing knowing just what type of gas to purchase for your Honda.

Low Ethanol Content

Ethanol is an alternative fuel added to gasoline to make it more environmentally friendly. This product is often made from corn or another high-starch plant.

It’s a product that is okay to use in most vehicles, but it’s not good for the small engine on your Honda pressure washer.

Ethanol naturally attracts moisture. This moisture and ethanol combination can leave behind varnish that coats and gums the fuel system causing fuel restrictions.

It is also highly corrosive and can cause components to fail prematurely on your pressure washer.

Because of its adverse effects on the fuel system, always choose gasoline with an ethanol content no greater than 10%. The lower the ethanol level, the better. Never use fuels sold as E15, E30, or E85. These fuels contain up to 15%, 30%, and 85% ethanol.

Use Fresh Gasoline

Gasoline can begin breaking down as soon as 30 days after purchase. Because of this, it’s best to purchase fresh gasoline and consume it within this time.

If you purchase more gas than you can use within 30 days, add a fuel additive to stabilize the gas so it lasts a little longer before it begins to break down.

Add a Fuel Stabilizer

Add a fuel stabilizer to gasoline while it is still fresh. Fuel additives cannot reverse the effects of old gas.

I like to add Sea Foam Motor Treatment to every tank of gas. Sea Foam not only stabilizes gas but also cleans the fuel system and reduces moisture. It helps minimize problems that can develop from running old fuel.

Another good fuel additive alternative is STA-BIL.

Ethanol-Free Fuel (Optional)

Using an ethanol-free gas will avoid the adverse effects ethanol has on the pressure washer. While ethanol-free gas is better to run through your Honda, it is the more expensive fuel choice.

Ethanol-free gas can be purchased at some fuel stations. It is sold as recreation fuel or REC-90.

It can also be bought in canisters at your local hardware store. The canisters are a convenient option to have on hand.

Tips for Purchasing and Storing Gas for Your Honda Pressure Washer

Using the wrong kind of gas or old gas in a Honda pressure washer can cause starting and running problems. Follow these quick tips when choosing and storing gas:

  • Always use fresh gas and consume it within 30 days.
  • Use unleaded gasoline with a minimum 87 octane rating and a maximum 10% ethanol content.
  • Add a fuel stabilizer when you cannot consume gas within 30 days.
  • Store gasoline in a dry cool location away from combustible products.