Gas Mileage "Improvers", the Real ScoopThe Federal Trade Commission (FTC) warns you to be wary of any
gas-saving claims for automotive devices or oil and gas additives. The
Environmental Protection Agency (EPA) has evaluated or tested more than 100
alleged gas-saving devices and has not found any product that significantly
improves gas mileage.
I did a search for engine efficiency products and
this is what I found :
Product: Optifuel XTR
Claimed: They claim this liquid gas
additive boosts gas mileage 10-20%.
Proof of Claims: They list
testimonials and "tests" that have the words indicating the product name whited
Cost: (not listed)
The missing product names on their
"tests" is something very suspicious.
Product: MPG-CAP is a small capsule that you put in your fuel tank
when filling up your vehicle.
Claimed: It will give you a 7-14%
increase on your miles per gallon yield. Its Advanced Lubrication Technology
will reduce the harmful wear and tear that your engine and other equipment
suffer during normal every day operation. It creates a micro-thin coating on the
combustion chamber in your engine.
Proof of Claims: One of the main
web sites promoting this did not list any test results, only tests showing that
the pill didn't negatively alter the gas. ABC
News reported a 4% highway mileage increase, but no city mileage increase.
reported the same results.
Cost: $20 per 10 caps
other "test results", but most don't even tell who did the testing. Why?
a tank of 20 gallons at $3.50/gal, saving 4%, you wind up with a savings of
$2.80. The pill costs $2. So the savings would be 80 cents per tank full.
Product: EnviroMax+. Just add 1 oz to every 5 gallons of gas for the
first 3 to 5 full tanks of fuel, then start adding 1 oz to every 10 gallons of
Claimed: With each fill up and you will see an increase in miles
per gallon up to 35%. It reduces engine wear and tear by 50% or more, and
increases horsepower & performance. It oxygenates the gasoline.
of Claims: The Department of Chemical Engineering at Texas Tech concluded
that an additive of zinc oxide suspended in peroxide increased diesel engine
mileage by 20% on average, and reduced emissions by around 30%. And half as much
iron particles were found in the oil after 28,000 miles, which indicates less
engine wear. The Emissions Testing Centers of Georgia reported an increase of
10.4% in gas mileage upon initial introduction of 3 oz of EnviroMax to 15
gallons of gas. Emissions were reduced significantly. The tested engine was a
2.5 liter V-6 Mopar. They expected greater mileage increases on less
fuel-efficient engines than the one they tested.
Cost: $19.50 for a 16
oz bottle. ($3.66 for 3 ounces)
The Texas Tech test looked good, but
they weren't exactly using the marketed EnviroMax product, only something
Adding $3.66 worth (3 ounces) of EnviroMax to 15 gallons of gas
which costs $52.50 (at $3.50 per gallon) saves $5.46 in gas. (10.4% of $52.50 is
$5.46). That, minus the cost of $3.66 leaves a savings of $1.80 per 15 gallons
Products: Vortec Cyclone, Tornado FuelSaver, or Turbonator-Only (all
are a device that fits in the air passage to cause the air to
Claimed: The Vortec Cyclone creates a dynamic swirling tornado
of air within the combustion chamber. This leads to better fuel atomization and
more efficient burning. A 1-2 mpg improvement is to be expected.
Claims: No true product test results are offered to verify the claims, only
It is very possible that the swirl
will most likely be interrupted by the shape of the 1 or 2 valved intakes (per
cylinder) and the greater force of the vacuum sucking the air straight down into
the cylinder, contrary to any circular air movement that might remain after it
squeezes past the valves. The bladed intake device would also most likely create
more resistance to air flow into the engine, whereas an engine turbo increases
air flow, thereby increasing engine power.
Product: Premiere Fuelsaver from EnerStar attaches externally to your
fuel line with an electrical lead that goes to the battery.
It sends a computer-controlled electromagnetic field around the fuel line with
the effect of separating clusters of fuel molecules into smaller groups and
individual molecules that are more readily oxygenated. Combustion is more
efficient and cleaner. This adds power, reduces fuel consumption, and reduces
Proof of Claims: The Emission Research and Measurement
Development Division of Environment Canada tested the EnerStar on the diesel
engine. The results were an average savings of 10% - with urban saving at 7%,
suburban at 13% and motorway at 10%.
Cost: $293 to $429.
EPA found that magnetic products don't improve gas mileage. This product varies
from regular magnets though in that it probably outputs an oscillating magnetic
field instead of a static one. The EPA needs to evaluate this specific product.
Search for info on electric powered bicycles if you want to
reduce your gas costs to zero.
Click here for a good
site with an engineer's comments on "fuel saving" gadgets.
here for reviews done by Popular Mechanics magazine.
The Environmental Protection Agency (EPA) has evaluated or tested more
than 100 alleged gas-saving devices and has not found any product that
significantly improves gas mileage. In fact, some "gas-saving" products may
damage a car's engine or cause substantial increases in exhaust emissions.
The gas-saving products on the market fall into clearly defined
categories. Although the EPA has not tested or evaluated every product, it has
tried to examine at least one product in each category.
Products Tested by EPA
following list categorizes various types of "gas-saving" products, explains how
they're used and gives product names. Those with asterisks may save measurable,
but small, amounts of gas. All others have been found not to increase fuel
Fuels and Fuel Additives. These materials are added to the gas tank.
The EPA has evaluated: 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
The EPA has evaluated: Analube Synthetic Lubricant;
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.
The EPA has evaluated the
following products: 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; Fuel Max*; 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.
EPA has evaluated: 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. Of question is whether
parts in the engine and exhaust will rust with an increased exposure to water
when it is injected.
The EPA has evaluated: Goodman Engine
System-Model 1800; Waag-Injection System*.
Ignition Devices. These devices are attached to the ignition system
or are used to replace original equipment or parts.
The EPA has
evaluated: 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.
The EPA has
evaluated: 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.
The EPA has evaluated:
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.
The EPA has evaluated: 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.
The EPA has evaluated:
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.
The EPA has
evaluated: Basko Enginecoat; Dresser Economizer; Electro-Dyne Superchoke;
Filtron Urethane Foam Filter; Lamkin Fuel Metering Device; Smith Power and
Internal Engine Modifications. These devices make physical or
mechanical function changes to the engine.
The EPA has evaluated:
ACDS Automotive Cylinder Deactivation System*; Dresser Economizer; MSU Cylinder
Accessory Drive Modifiers. These devices reduce power to specific
The EPA has evaluated: Morse Constant Speed
Accessory Drive **; P.A.S.S. Kit**; PASS Master Vehicle Air Conditioner**.
Driving Habit Modifiers. These are lights or sound devices to tell
the driver to reduce acceleration or to shift gears.
The EPA has
evaluated: AUTOTHERM**; Fuel Conservation Device; Gastell; IDALERT**.
Miscellaneous. The EPA has evaluated: BRAKE-EZ; Dynamix; Fuel
Maximiser; Gyroscopic Wheel Cover; Kamei Spoilers**; Kat's Engine Heater; Lee
Exhaust and Fuel Gasification EGR; Mesco Moisture Extraction System; P.S.C.U. 01
Device; Treis Emulsifier.
* Indicated a very small improvement in fuel
economy but with an increase in exhaust emissions. According to Federal
regulations, installation of this device could be considered illegal tampering.
** Indicated a very small improvement in fuel economy without an
increase in exhaust emissions. However, cost-effectiveness must be determined by
the consumer for a particular application.