'Fuel Economy' Products

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EPA's Evaluation of Fuel Economy/Efficiency Products

EPA tests fuel saving products to determine whether they significantly improve fuel economy as claimed in their ads. However it does not conduct any durability tests and therefore, is in no position to inform us what harm these products might bring to a car or its performance. It warms that on board diagonostic systems associated with modern vehicles' sophisticated and comple emission control systems might be adversely affected by retrofit of these products in alarming the driver to problems of emission control and fuel delivery.


These Auto 'Fuel Economy' Products Don't Work - EPA

EPA found the following products claiming in their ads to improve car fuel economy or efficiency didn't do so. As warned above, there are some potential harms possible.

Air Bleed Devices

These devices bleed air into the carburetor. They usually are installed in the Positive Crankcase Ventilation line or as a replacement for idle-mixture screws.

ADAKS Vacuum Breaker Air Bleed
Air-Jet Air Bleed
Aquablast Wyman Valve Air Bleed
Auto-Miser
Ball-Matic Air Bleed
Berg Air Bleed
Brisko PCV
Cyclone-Z
Econo Needle Air Bleed
Econo-Jet Air Bleed Idle Screws
Gas Saving Device
Grancor Air Computer
Hot Tip
Landrum Mini-Carb
Landrum Retrofit Air Bleed
Mini Turbocharger Air Bleed
Monocar HC Control Air Bleed
Peterman Air Bleed
Pollution Master Air Bleed
Ram-Jet
Turbo-Dyne G.R. Valve


Vapor Bleed Devices

These devices are similar to the air bleed devices, except that induced air is bubbled through a container of a water and anti-freeze mixture, usually located in the engine compartment.

Atomized Vapor Injector
Frantz Vapor Injection System
Hydro-Vac
POWERFUeL
Mark II Vapor Injection System
Platinum Gasaver
V-70 Vapor Injector
SCATPAC Vacuum Vapor Induction System
Econo-Mist Vacuum Vapor Injection System
Turbo Vapor Injection System


Liquid Injection

These products add liquid into the fuel/air intake system and not directly into the combustion chamber.

Goodman Engine System-Model 1800


Ignition Devices

These devices are attached to the ignition system or are used to replace original equipment or parts.

Autosaver
Baur Condenser
BIAP Electronic Ignition Unit
Fuel Economizer
Magna Flash Ignition Control System
Paser Magnum/Paser 500/Paser 500 HEI
Special Formula Ignition Advance Springs


Fuel Line Devices (heaters or coolers)

These devices heat the fuel before it enters the carburetor. Usually, the fuel is heated by the engine coolant or by the exhaust or electrical system.

FuelXpander
Gas Meiser I
Greer Fuel Preheater
Jacona Fuel System
Optimizer
Russell Fuelmiser


Fuel Line Devices (magnets)

These magnetic devices, clamped to the outside of the fuel line or installed in the fuel line, claim to change the molecular structure of gasoline.

PETRO-MIZER
POLARION-X
Super-Mag Fuel Extender
Wickliff Polarizer [fuel line magnet/intake air magnet]

Fuel Line Devices (metallic)

Typically, these devices contain several dissimilar metals that are installed in the fuel line, supposedly causing ionization of the fuel.

Malpassi Filter King [fuel pressure regulator]
Moleculetor


Mixture Enhancers (under the carburetor)

These devices are mounted between the carburetor and intake manifold and supposedly enhance the mixing or vaporization of the air/fuel mixture.

Energy Gas Saver
Environmental Fuel Saver
Gas Saving and Emission Control Improvement Device
Glynn-50
Hydro-Catalyst Pre-Combustion Catalyst System
PETROMIZER SYSTEM
Sav-A-Mile
Spritzer
Turbo-Carb
Turbocarb


Mixture Enhancers (others)

These devices make some general modifications to the vehicle intake system.

Basko Enginecoat
Dresser Economizer
Electro-Dyne Superchoke
Filtron Urethane Foam Filter
Lamkin Fuel Metering Device
Smith Power and Deceleration Governor


Internal Engine Modifications

These devices make physical or mechanical function changes to the engine.

Dresser Economizer


Fuels and Fuel Additives

These materials are added to the gas tank.

Bycosin
EI-5 Fuel Additive
Fuelon Power
Johnson Fuel Additive
NRG #1 Fuel Additive
QEI 400 Fuel Additive
Rolfite Upgrade Fuel Additive
Sta-Power Fuel Additive
Stargas Fuel Additive
SYNeRGy-1
Technol G Fuel Additive
ULX-15/ULX-15D
Vareb 10 Fuel Additive
XRG #1 Fuel Additive


Oils and Oil Additives

Usually these materials are poured into the crankcase.

Analube Synthetic Lubricant
Tephguard


Driving Habit Modifiers

These are lights or sound devices to tell the driver to reduce acceleration or to shift gears.

Fuel Conservation Device
Gastell


Miscellaneous

BRAKE-EZ
Dynamix
Fuel Maximiser
Gyroscopic Wheel Cover
Kat's Engine Heater
Lee Exhaust and Fuel Gasification EGR
Mesco Moisture Extraction System
P.S.C.U. 01 Device
Treis Emulsifier


For original source please visit FTC's Facts for Consumers: "Gas-Saving" Products: Fact or Fuelishness?, based on EPA and www.fueleconomy.gov

Last Update: April 25, 2004.