We consider a dry gas additive to be a worthy investment in the long run. Let’s take you step by step, type by type, and find the best dry gas additive for you.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Heet Dry Gas Additive READ REVIEW

Best For Synthetic Oil: Buy: Lucas Oil Dry Gas Additive READ REVIEW

Best For Helping Gas Lawn Mowers: Buy: Stabil Dry Gas Additive READ REVIEW

Best For Pressure Washers: Buy: Sea Foam Dry Gas Additive READ REVIEW

Best For Outboard Motor: Buy: Star Brite Dry Gas Additive READ REVIEW

Best For Regular Gas: Buy: Iso-Heet Dry Gas Additive READ REVIEW

Best For Unleaded Gas: Buy: K-100 Dry Gas Additive READ REVIEW

Best For Boat: Buy: Rislone Dry Gas Additive READ REVIEW

Best For Cylinder Heads: Buy: Stp Dry Gas Additive READ REVIEW

Best For Fuel Economy: Buy: Hapco Products Co Dry Gas Additive READ REVIEW

Best Overall: Heet Dry Gas Additive

Buy on Amazon

The Heet Dry Gas Additive has the most appropriate features for the price point. The heet dry gas additive is made for good stuff, is blue and it is made with fast shipping. With heet products pumping through your engine’s veins, you’ll always be safeguarded against freeze-ups in winter. Further, it prevents rust and it should give it a try.

The additive has a twist off cap, works as intended and it is convenient. Finally, the heet dry gas additive is safe for all four - cycle engines, including fuel injected engines.

Almost all customers agree that the additive is much cheaper than buying regular fuel for an alcohol stove. Further, they also found that the additive is easy to use and it works great, plus it is inexpensive. Overall, the tone of buyers is very positive and we believe that the additive suits the purpose.

• This is designed for more power and it runs great.
• This can be used as cleaners, sanitizers (hand or surface) or sterilizer.
• Safe for use in all 4-cycle engines, including fuel injected engines.
• This works well for vehicle gas line antifreeze.

Best For Synthetic Oil: Lucas Oil Dry Gas Additive

Buy on Amazon

The Lucas Oil Dry Gas Additive's high-end materials make sure that it ages well with use. The lucas oil dry gas additive is formulated for both gasoline and diesel engines, carbureted or fuel injected. It gives your fuel system what it really needs. In addition, the additive noticed the difference and it runs great.

The additive saves money and we should give it a try. Moreover, this can be used in vehicles that require leaded fuel because it actually replaces the benefits of lead in gasoline without causing harmful emissions. Lastly, the lucas oil dry gas additive has increased mileage and it is good for synthetic oil.

Most customers found that the additive improves performance and increases gas mileage a bit. In addition, they say that the additive is great for cars with out filters. Further, a few say that the additive is one or one or both of them together.

• Country of origin : United States.
• This will help stave off replacement injectors or maybe even delay a rebuilding.
• This cleans everything out all at once with no problems or smoking.
• This allows the engine to operate at maximum efficiency.

Best For Helping Gas Lawn Mowers: Stabil Dry Gas Additive

Buy on Amazon

The best part: Stabil Dry Gas Additive costs comparatively low and it is available to ship in 24 hours. The stabil dry gas additive is made for good stuff, is blue and it works as advertised. If using with small engine equipment, it is best to add sta-bil storage to your gas can. In addition, this is used for leaf blower and it is easy to add.

Finally, the stabil dry gas additive is convenient, works for real money and it is best for a good deal.

Most customers found that the additive works for the rv year after year...the mower too. And, a few strongly agree that the additive works for this motor head. To sum up, buyers found this to be one of the best additives for daily purposes.

• This is great for storing gas in a container over the winter.
• This can be used in 2stroke premix with no problems.
• Sta-bil storage fuel stabilizer is safe for use in all gasoline engines, including 2-cycle.
• This is designed to mitigate the use of ethanol fuel blends.

Best For Pressure Washers: Sea Foam Dry Gas Additive

Buy on Amazon

The Sea Foam Dry Gas Additive's material feels more premium than its price would suggest. The sea foam dry gas additive works for engine light and it is great for pressure washers. Make sure this fits by entering your model number. Further, it works in crankcase oil to liquefy harmful residues and deposits.

Lastly, the sea foam dry gasadditive is made from petroleum ingredients, Sea foam is safe and effective when used in any gasoline or diesel engine.

Almost all customers agree that the additive will smooth out a rough running engine and keep it that way with occasional use. Furthermore, a few also found that the additive cleans up any varnish or clogging residue in the carborator. Overall, many buyers have used the sea foam drygas additive for more than a few months without any complaints, and it shows no sign of giving up.

• Stabilizes gas and diesel fuel up to 2 years.
• Lubricates upper cylinders for longer engine life.
• This is good for removing water and keeping motors clean and carbs operating.
• This does not harm the o2 sensors or the cat.

Best For Outboard Motor: Star Brite Dry Gas Additive

Buy on Amazon

Star Brite makes beautiful and great additives with classic and smartly chosen materials. The Star Brite Dry Gas Additive can be used in all gas outboards, inboards, cars, trucks, motorcycles, atvs, snowmobiles, small engines, outdoor power equipment including pre-mix fuel engines. Star tron enzyme fuel treatment concentrate improves the combustibility of all fuel. This revolutionary fuel stabilizer utilizes enzyme technology to enhance the performance of boats, automobiles, trucks, rvs, tractors, farm equipment, generators, lawnmowers, lawn equipment, oil - burning furnaces and all other small engines.

Most importantly, the star brite dry gas additive can be bought for good value and it is designed for more power.

Most buyers opine that the additive is the best gas treatment for environmental problems and the long life of the gas when in storage. Also, a few say that the additive is used to to let it warm up or it would die a few times. Moreover, they say that the additive is one of the best to deal with the moon shine or ethanol. In conclusion, the tone of buyers is very positive and we believe that the additive suits the purpose.

• It is hard to cleanly pour and measure.
• This is ideal for everyday use and seasonal storage.
• I can not believe how good readings are.
• This is made with great stuff and it started right up.

Best For Regular Gas: Iso-Heet Dry Gas Additive

Buy on Amazon

Next on the list, we've got yet another additive that manages to win our hearts. It's the Iso-Heet Dry Gas Additive and it's widely considered as the additive that has the most suitable features. The iso-heet dry gas additive comes in an easy - pour 12 ounce bottle. Gold eagle iso-heet premium fuel-line antifreeze, water remover & injector cleaner is the premium gas-line antifreeze that absorbs up to 5 times the water of regular gas dryers. And, this is condensation in warm, is made for lawn tractors and it is great with great stuff.

The additive is not for sale on Catalina island. Further, the additive provides quicker starting, prevents stalling and keeps fuel systems clean. recommended for sports cars, snowmobiles, small engines, motorcycles, marine engines, as well as diesel engines of 12 oz. Above all, the iso-heet dry gas additive prevents rust and it is great for shelf life.

Most customers opine that the additive works in capless gastank. Also, they say that the additive is easy to inject into the gas tank. As a result, buyers were very happy to recommend it to friends and would-be buyers.

• This has a twisted off cap and it is industrial.
• Absorbs 5 times more water than regular gas dryers.
• It comes in a red bottle.
• This has always worked well.

Best For Unleaded Gas: K-100 Dry Gas Additive

Buy on Amazon

The K-100 Dry Gas Additive's material feels more premium than its price would suggest. The k-100 dry gas additive works as advertised and it has better throttle response. Make sure this fits by entering your model number. In addition, it comes with part number and it is for throttle response.

The additive ran great, started immediately and I gave it a try. Most importantly, the k-100 drygas additive does the job and it is suitable for lawn tractor.s.

Most customers agree that the additive can be used in an atv, wood splitter, chain saws, and snow blower. Further, a few say that the additive is best for 2 - cycle engines. Also, they say that the additive is the best option available and it works. To sum up, buyers found this to be one of the best additives for daily purposes.

• This makes a profound difference and also it is clear and it works better.
• This has alcohol but what ever it has, it really works.
• This allows for more power and it is very happy.
• This has burns water and it is good for leaf blower.

Best For Boat: Rislone Dry Gas Additive

Buy on Amazon

The best part: Rislone Dry Gas Additive costs comparatively low and it is available to ship in 24 hours. The rislone dry gasadditive is made for worth the cash, is good for fuel pumps and it comes with good products. A bottle of rislone diesel fuel system treatment contains an equivalent amount of additives as full bottles. The best all in one gasoline fuel additive money can buy.

The additive provides reduced fuel system and emission control repairs. Lastly, the rislone dry gas additive will not void the manufacturer’s new vehicle warranty and is safe to use on vehicles with oxygen sensors and catalytic converters.

Almost all customers found that the additive is one powerful bottle, plus it is best for performance cars too. In addition, a few also found that the additive works really well, especially if you've never used a fuel system cleaner to clean your fuel lines & intake. Therefore, customers were eager to recommend it to friends and would-be buyers.

• This is best with high octane fuel and every 5k miles.
• This cleans the fuel injectors but lubricates the upper cylinder walls.
• This works in all gasoline - powered vehicles, including capless gas tanks.
• This works as described and it is a great item.

Best For Cylinder Heads: Stp Dry Gas Additive

Buy on Amazon

The Stp Dry Gas Additive's superior materials make sure that it ages well with use. The stp dry gas additive has improved performance and it filled the tank. Contains concentrated detergents for effective car care. Moreover, the additive is for throttle response and it is very good.

The additive is great for fuel efficiency and it is perfect for a good deal. Lastly, the stp dry gas additive is made with jet fuel, a high-quality carrier of active ingredients.

Most customers opine that the additive can only dissolve so much buildup. Also, a few say that the additive is rather intermittent, but this stopped it for the time being. And, they strongly agree that the additive is concentrated stuff you wouldn't want to use it every fill up, will probably damage the fuel line. Overall, most buyers agree that the additive suits best, and no one questions it.

• This can be used on any gasoline - run vehicle.
• Two 5.25 fl oz bottles of stp super concentrated fuel injector cleaner.
• This can also help keep clean.
• This runs more smoothly, has miles per gallon and it is easy to recommend items.

Best For Fuel Economy: Hapco Products Co Dry Gas Additive

Buy on Amazon

Hapco Products Co line of additives comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Hapco Products Co Dry Gas Additive is great to use in all gasoline, diesel and marine engines. Use regularly as you fill up. And, the additive is great for customer service and it is good for fast delivery.

The additive is designed to help fuel become more efficient and increase fuel economy. Above all, the hapco products co dry gas additive provides maximum lubrication to any fuel system.

Most buyers quickly discovered that the additive provides the lead additives for engines that need leaded gas. And, they strongly agree that the additive is great to keep the valves in good working order. Moreover, a few strongly agree that additives are not recommended to use lead additives. In short, at the price, they believe that they got a steal of a deal with it.

• This is designed for unleaded fuel with ethanol.
• This is made for engines that used to burn leaded gas.
• This is good for many years.
• Use to quickly prevent valve recession and wear.