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

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Our Top Picks:

Best Overall: Buy: Stabil Lead Substitute Fuel Additive READ REVIEW

Best For Outboard Motor: Buy: Star Brite Great Treatment READ REVIEW

Best For Fuel Economy: Buy: Hapco Products Co Lead Substitute Fuel Additive READ REVIEW

Best For Unleaded Gas: Buy: Niteo Lead Substitute Fuel Additive READ REVIEW

Best For Lawn Tractor: Buy: Star Brite Lead Substitute Fuel Additive READ REVIEW

Best For Truck: Buy: Solder Seal Lead Substitute Fuel Additive READ REVIEW

Best For Playing With The Leos: Buy: Torco Lead Substitute Fuel Additive READ REVIEW

Best Overall: Stabil Lead Substitute Fuel Additive

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If you want nothing less than the best fully-featured additive, then Stabil Lead Substitute Fuel Additive is the one you should definitely consider, as it manages to bring a lot to the table. The stabil lead substitute fuel additive is made with fuel tanks and it works better. This way, every piece of equipment you fill with can be treated. Moreover, the additive is good for use up to 2 years after the bottle was opened.

The additive is designed for a great price and it is easy to add. And, this is highly recommend, works as advertised and it has easy starts. Lastly, the stabil lead substitute fuel additive is great for bulk gas storage as well as collector cars, small engines, generators, & boats.

Most buyers quickly discovered that the additive is well worth as the cleaner the motor is, the longer it will last. In addition, they also found that the additive can be used in 2stroke premix with no problems. In addition, they strongly agree that the additive makes no difference to adding to that has run fine ever since. With no doubts, this product passed the test and had very satisfied buyers eager to share their experience.

• This is as great as it is supposed too. It will be great.
• This works for this motor head.
• This works well with the ethonol added to gasoline today.
• This definitely makes life easier.

Best For Outboard Motor: Star Brite Great Treatment

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Best part: Star Brite Great Treatment costs comparatively low and it is available to ship in 24 hours. The star brite great treatment is great for fuel injectors, improves performance and it is great for fuel efficiency. Star tron enzyme fuel treatment concentrated formula #930xx is economical to use in large and small applications. 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.

The additive is made for good value and it is highly recommend. Also, the additive is made for good stuff, is great for a great price and is cost - effective. Above all, the star brite great treatment is safe for all engines, will not harm oxygen sensors, and overdosing is not harmful.

Almost all buyers found that the additive will add a measuring cap to it. Further, they also found that the additive is best for treating ethanol gasoline.

• This saves money and it runs better.
• I can not believe how good readings are.
• This allows for better fuel economy, works as advertised and it works in all engines.
• This is one of the best to deal with the moon shine or ethanol.

Best For Fuel Economy: Hapco Products Co Lead Substitute Fuel Additive

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The best part: Hapco Products Co Lead Substitute Fuel Additives, costs comparatively low and they are available to ship in 24 hours. The hapco products co lead substitute fuel additive is made with fast shipping and it helps stop power. Use regularly as you fill up. In addition, the additive is great for customer service and it makes sure.

Above all, the hapco products co lead substitutefuel additive provides maximum lubrication to any fuel system.

Almost all customers found that the additive is made for engines that are used to burn leaded gas. In addition, they also found that the additive is a lead, not an octane booster. Overall, many have used the hapco products co leadsubstitute fueladditive for more than a few months without any complaints, and it shows no sign of giving up.

• This is great to keep the valves in good working order.
• One 16 oz. bottle treats up to 25 gallons.
• This provides the lead additives for engines that need leaded gas.
• Safe for any type of fuel system.

Best For Unleaded Gas: Niteo Lead Substitute Fuel Additive

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Compared with other additives in this category, the Niteo Lead Substitute Fuel Additive has a convenient design. The new lead substitute fuel additive is perfect for classic cars and it makes sure. Make sure this fits by entering your model number. And, this is designed to prevent valve recession.

The additive is easy to use, is great with great stuff for antiques and it is convenient. Finally, the niteo lead substitute fuel additive allows older engines designed for use with "leaded" gasoline to run safely with low lead or unleaded fuels when used as directed.

Most buyers opine that the additive will burn out with the new gas has no lead in it. Further, a few strongly agree that the additive is not designed nor tested as a fuel stabilizer. And, a few strongly agree that the additive protects against valve seat wear. In conclusion, most customers agree that the additive is functionally comfortable and no one questions it.

• Coats with a protective film designed to prevent valve recession.
• This comes with great stuff and it makes for happy fuel.
• Prevents valve damage and upper cylinder wear in older engines.

Best For Lawn Tractor: Star Brite Lead Substitute Fuel Additive

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The Star Brite 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 Star Brite Lead Substitute Fuel Additive is great for fuel efficiency, is very happy and it is worth the money. Using original star tron enzyme fuel treatment at every fuel fill is also recommended to keep engines operating at peak performance levels. In addition, the additive is used every 4 to 5 tanks or as often as needed.

The additive is suitable for lawn tractor,s is highly recommended and it allows for better fuel economy. Further, the additive noticed the difference and it could buy a string trimmer. Above all, the star brite leadsubstitute fueladditive comes with fuel tanks and it is perfect for more power.

Almost all customers found that the additive cleans out the cylinders/rings and the engines run much smoother. In addition, a few strongly agree that the additive is intended for all marine engines. Moreover, they strongly agree that this additive is meant to be used every four or five fill ups, and not at every stop at the gas station, so be sure to follow those instructions.

• This runs smoother and it makes sure.
• It ran great, is great for classic cars and it is blue.
• Improves fuel combustibility to keep engines clean and operating at peak performance levels.
• This is ideal for removing deposits caused by regular gas and ethanol-blends.

Best For Truck: Solder Seal Lead Substitute Fuel Additive

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate additive. The Solder Seal Lead Substitute Fuel Additive is exactly that - it's a simple additive that hits all the right notes. The solder seal lead substitutefuel additive is ideal for use during roadside breakdowns. Make sure this fits by entering your model number. And, the additive is made for good stuff and it is with great item.

The additive is best for classic cars and it does the job. Most importantly, the solder seal lead substitute fuel additive is convenient, works as advertised and it is industrial.

Most buyers found that the additive is safe for most gas tank sealers. In addition, they strongly agree that the additive is designed to run on leaded gas. And, they also found that the additive is as good as the day it is new.

• Country of origin : United States.
• It contains valve seat anti-wear additive.
• Lot of satisfied buyers.

Best For Playing With The Leos: Torco Lead Substitute Fuel Additive

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Compared with other additives in this category, the Torco Lead Substitute Fuel Additive has a convenient design. And, the additive is not just another fuel additive, it's simply a race fuel concentrate. Make sure this fits by entering your model number. Above all, the torco lead substitute fuel additive does the job and it has increased octane.

Most buyers quickly discovered that the additive is used to run nos and 104+, which yes, they worked. Moreover, a few strongly agree that the additive is great for high boost and cheaper than race gas. To sum up, for almost all customers, it was the most suitable.

• This can be used as a safety net.
• This is great for playing with lessons.
• This does literally add $10 per tank of gas.
• This is an octane booster, Call Torco for complete info.