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2002 F55 STS, 2014 Explorer XLT, F-150
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The engine does not need any magic potions. TopTier fuels have all you need. If you want to feel all warm and fuzzy, run a bottle of Chevron TECHRON every 5,000 miles - It's powerful stuff, so no more often. Leave the rest of the snake oils on the shelf and keep your money in your wallet.
 

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#05-00-89-072D: Fuel and Oil Additives - Facts and Myths - Maximizing Gasoline Fuel Economy - (Sep 1, 2016)
Subject: Fuel and Oil Additives - Facts and Myths - Maximizing Gasoline Fuel Economy
Models: 2017 and Prior GM Passenger Cars and Trucks
This Bulletin applies to Export Models.
Attention: Please direct this bulletin to the Service Manager, Service Consultants and the Sales Staff. A copy of this bulletin is encouraged to be given to the customer as it is written with the consumer in mind. This bulletin may be posted in the customer lounge or waiting area.
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This Bulletin has been revised to add Model Years, add graphics, add a Section for Web Sites and update the information. Please discard Corporate Bulletin Number 05-00-89-072C.
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A Statement About Fuel Economy

Sustainable energy use meets our present energy needs without compromising the ability of future generations to meet theirs. Almost all of the cars and trucks we drive run on fuels derived from oil, which is a non-renewable resource. Therefore, it makes sense to use fossil fuel resources such as oil in the most efficient way possible.
The information below is presented in three sections:
· What Not To Do: Engine and Fuel Additives, Alternate Fuels, and Miracle Products
· What to Do: Maximizing Fuel Economy/Minimizing Costs
· Web Sites
What Not To Do: Engine and Fuel Additives, Alternate Fuels, and Miracle Products

Various unproven products with claims to improve vehicle fuel economy have been reported ranging from magnets that align molecules to chemical combustion improvers.
Most products claiming to provide benefits are based on unsubstantiated claims. Those that do present scientific results generally either have too little supporting data to be conclusive, have not conducted experiments in a controlled fashion, or cannot be substantiated by anyone else but the product's manufacturer. A review of the information shows that the majority did not work, and for those that showed some effect, the benefit was too small to be cost effective.
The U.S. Federal Trade Commission summarizes results for products tested by the federal government at their website.
Harmful Ideas That May Damage the Vehicle and Increase Emissions

Notice: Never put Kerosene or Diesel Fuel into any gasoline engine vehicle. This may result in inconsistent performance, driveability concerns and damage to the engine that is not covered by the vehicle warranty.
· A recent poor idea to improve fuel economy is to blend either kerosene or diesel fuel into gasoline. Both kerosene and diesel fuel are distillate fuels meant for use in compression ignition engines, not spark ignition engines. They have very low octane and since they are heavier (higher density) than gasoline, they will cause heavy engine deposits, degradation of engine oil and very poor driveability.
Notice: Never put acetone, ketones, or methanol additives into any gasoline engine vehicle. Some of these solvents may damage or corrode the fuel system. They may also damage the painted surfaces of the vehicle if spilled.
Damage to vehicle components that result from using non-approved or aftermarket additives and devices are not covered by the vehicle warranty.
· Chemicals that are normally used as solvents should not be used. These include acetone, ketones, and methanol. These solvents may be incompatible with rubber and/or sealing components, and in case of contact, may dissolve the vehicle’s paint finish. In the case of methanol, corrosion of metal parts in the fuel system may occur.
 

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2002 F55 STS, 2014 Explorer XLT, F-150
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80,381 Posts
danog, You're cutting into my supplemental income from pushing snake oils and other accessories from behind the parts counter.

Google "spiff". For every quart of Mom's Magic Fuel System and High Performance Cleaner that I push out the door I get an instant $1 kickback..........

Fortunately, TECHRON and TopTier gasolines do not contain any of your listed nasty solvents.
 

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#05-06-04-022P: TOP TIER Detergent Gasoline and TOP TIER Diesel Fuel Information and Licensed Brands - (Mar 7, 2019)
Subject: TOP TIER™ Detergent Gasoline and TOP TIER™ Diesel Fuel Information and Licensed Brands
Models: 2019 and Prior GM Passenger Cars and Trucks (includes Medium Duty)
United States, Canada and Puerto Rico
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This Bulletin has been revised to add Model Year 2019 vehicles and update the TOP TIER Fuels Website URL. Please discard Corporate Bulletin Number 05-06-04-022O.
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TOP TIER™ Fuels – General Motors Recommendation


Note: This is a voluntary program for fuel marketers and not all fuel marketers will offer TOP TIER™ Detergent Gasoline or TOP TIER™ Diesel Fuel. Registration is based on certification data and marketers of all sizes including some major brands, independents and big box stores.
· A class of fuel called TOP TIER™ Detergent Gasoline is available from various fuel marketers for all octane grades of gasoline sold at their stations in the United States (including US Territories), Canada, Puerto Rico and certain Central American countries. This gasoline meets the detergent standards developed by eight automotive companies. All vehicle engines will benefit from using TOP TIER™ Detergent Gasoline over gasoline containing the “Lowest Additive Concentration” (LAC). LAC is also known as the minimum detergent treat rate, recommended by the Environmental Protection Agency (EPA) in the United States and in Canada, the Canadian General Standards Board (CGSB). Those vehicles that have experienced engine deposit related concerns may especially benefit from using TOP TIER™ Detergent Gasoline.
· The TOP TIER™ program is not just about a high detergency rate. It is a robust engine cleanliness and performance specification validating the specific chemistry within the detergent package. TOP TIER™ Detergent Gasoline must conform to the standards which specify that gasoline sold in the selected nation or region shall not contain metallic additives, including methylcyclopentadienyl manganese tricarbonyl (MMT). If a fuel marketer successfully completes all of the engine and fuel injector testing required in the TOP TIER™ specification, they can claim to be TOP TIER™. All performance testing must be conducted at an independent, ISO 17025 accredited laboratory.
· A class of fuel called TOP TIER™ Diesel Fuel is available from various fuel marketers. Since diesel fuel retailers may also sell non-additized diesel fuel or diesel fuel not meeting the TOP TIER™ requirements, always check the dispenser for TOP TIER™ Diesel Fuel designation.
· The EPA and CGSB require only a minimum amount of detergent in gasoline. TOP TIER™ Detergent gasoline contains 2–3 times more detergent than the EPA and CGSB minimum requirement, resulting in a lower amount of intake valve deposits (IVD). The IVD can negatively affect fuel economy, emissions, and performance.
· General Motors, FCA, BMW, Honda, Toyota, Volkswagen, Audi and Mercedes-Benz developed the TOP TIER™ Detergent Gasoline Standards and support the use of TOP TIER™ Detergent Gasoline by recommending it in their vehicle Owner Manuals. All eight corporations recognize the benefits to the engine, the environment, and the consumer. Additionally, the companies recognize that by joining together they can better address the industry concern with low fuel detergency levels and the intentional addition of harmful organometallic additives. GM strongly recommends the use of TOP TIER™ Detergent Gasoline and TOP TIER™ Diesel Fuel.
A Cleaner Engine Has Performance and Environmental Advantages

The following gasoline engine intake valve graphics show the difference between an engine that did not use TOP TIER™ Detergent Gasoline and an engine that did use TOP TIER™ Detergent Gasoline at 10,000 miles (16,093 km).
Engine intake valve using Non-TOP TIER™ Detergent Gasoline having the minimum detergent treat rate with more than 1,000mg of deposits.
Rock

Deposits (1 and 2) on the intake valve reduce fueleconomy by creating a porous surface that collects wet fuel, thereby affectingthe air to fuel mixture in the cylinder and releases fuel late in thecombustion cycle leading to increased unburnt hydrocarbon (HC) and carbonmonoxide (CO) emissions. Likewise fuel injectors may become restricted withcarbon deposits over time resulting in an incorrect injector spray pattern andsimilarly increasing HC and CO emissions.

Engine intake valve using TOP TIER™ Detergent Gasoline having a highdetergent treat rate with less than 50mg deposits
Candle holder Furniture Interior design Candle Circle

This intake valve is significantly cleaner,resulting in optimal fuel economy and engine driveability performance as wellas reduced emissions.
 

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Alexandra - 96 SDV Clyde - 15 Silvy
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6,603 Posts
Techron is good stuff, it's strong enough to temporarily clear misfires from ailing spark plugs. Yes, I do speak from experience.

ACDelco's brew used to be the same as Techron, right down to the bottle. However, it looks like they've reformulated it, to where it may be a different strength. Bought a couple bottles off eBay to try for kicks and grins.
 
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