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10 Fuel Myths Stupid People Fall For (You’re Wasting Money!)
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May 15, 2025
Think premium gas gives you more power? Or that topping off your tank saves money? Think again. In this video, we expose the most ridiculous fuel myths people still fall for—and you might be one of them! From common misconceptions about fuel grades to the real truth behind fuel additives and fuel economy tricks, we debunk the nonsense and giving you real facts every driver needs to know. Let's start watching! #FuelMyths #CarMyths #GasSavingTips #CarMaintenance #FuelEconomy #MechanicScams #PremiumGasMyth #CarTips #SaveOnGas #AutoFacts You'll Love To Watch More: Methods To Reset Your Car: https://youtu.be/vw2RHJp5BVo Doing This Will Make Your Engine Run Like New Again: https://youtu.be/WYqurFzLtCQ Avoid Using This Oil: https://youtu.be/9oqex55Q29I Most Common Mechanic Scams: https://youtu.be/x28r0LPLdlY Disclaimer: Mechanical Boost is your go-to channel for everything on engines, cars, pickup trucks, and SUVs. Whether you're an automotive enthusiast, a casual driver, or someone looking for your next ride, Mechanical Boost is here to fuel your passion and knowledge about all things on wheels. From the latest automotive trends to timeless classics, we dive into every detail to keep you informed and entertained. Subscribe for practical tips and tricks to improve your car care routine. Visit our website To Download PDF: https://mechanicalboost.com/ Contact Us At Our Email If You Have Any Questions: [email protected]
View Video Transcript
0:00
the world is packed with fuel myths that
0:01
drivers swear by and their wallets
0:03
suffer for it From topping off the tank
0:05
to pouring in miracle fuel additives
0:07
there's a mountain of so-called fuel
0:09
saving tricks that do nothing but drain
0:12
your wallet and damage your engine These
0:14
myths get passed down like car gospel at
0:16
gas stations garages and even in online
0:19
forums But how many of them are actually
0:22
true In this video we're busting the
0:24
most common fuel myths using real facts
0:26
modern car science and a dose of common
0:29
sense So buckle up because myth number
0:31
seven will surprise even the most
0:33
seasoned drivers Let's dive in Myth
0:35
number one premium fuel is better for
0:38
all engines This is probably the most
0:40
expensive myth on the list People assume
0:42
that premium means better like it's a
0:44
high performance energy drink for your
0:46
car However premium fuel simply has a
0:49
higher octane rating which helps to
0:51
prevent engine knocking in turbocharged
0:53
or high performance engines If your
0:55
owner's manual doesn't specifically call
0:58
for premium you're literally burning
1:00
money If your car is designed for
1:02
regular 87 octane pumping in 91 or 93
1:06
won't improve acceleration fuel economy
1:09
or engine health In fact some studies
1:11
show zero difference in efficiency or
1:13
lifespan when using premium in
1:16
nonpremium engines So unless it's
1:18
required or recommended skip the upsell
1:20
Myth number two fuel additives clean
1:23
your engine like new Like new many
1:25
over-the-counter fuel additives promise
1:27
to clean your fuel system increase power
1:30
or boost your miles per gallon But
1:32
here's the harsh truth Most of these
1:34
additives won't make your engine sparkle
1:36
like new and some could actually cause
1:38
more harm than good While some
1:40
professional-grade additives used by
1:42
mechanics can help dissolve mild carbon
1:44
buildup in your injectors or valves
1:46
especially in older engines with high
1:48
mileage If your engine is
1:49
well-maintained and you're already using
1:51
quality fuel these additives are often
1:53
redundant at best In fact modern fuel is
1:56
already engineered with cleaning agents
1:58
so adding more is usually like putting
2:00
ketchup on spaghetti Myth number three
2:02
overinflated tires improve fuel
2:04
efficiency This myth surprisingly
2:06
popular among drivers chasing better MPG
2:09
numbers The logic Less tire touching the
2:12
road means less rolling resistance which
2:14
means better fuel economy Sounds smart
2:17
right And technically yes overinflated
2:20
tires reduce rolling resistance a bit
2:22
which might give you a tiny bump in fuel
2:24
efficiency but that's where the benefits
2:26
end and the risk begin Overinflated
2:28
tires compromise your traction braking
2:31
performance and ride comfort It can lead
2:33
to dangerous driving conditions
2:35
especially in wet or slippery weather It
2:37
also causes uneven tire wear especially
2:40
down the center tread which shortens
2:42
tire life and could lead to blowouts
2:44
Fuel efficiency isn't just about how
2:46
fast you roll It's also about safety and
2:49
control Stick to the manufacturer's
2:51
recommended PSI listed on your driver
2:53
side door frame or owner's manual Myth
2:56
number four air conditioning wastes more
2:58
fuel than open windows This is partially
3:01
true but often misunderstood At low
3:03
speeds like city driving using the AC
3:06
does consume extra fuel But when you're
3:08
driving on the highway rolling down the
3:10
windows increases aerodynamic drag That
3:13
drag forces the engine to work harder
3:15
Sometimes using even more fuel than the
3:17
AC would So at higher speeds using the
3:20
air conditioner may actually be more
3:22
efficient than driving with the windows
3:24
down It depends heavily on your driving
3:26
conditions in the vehicle's aerodynamics
3:29
For best fuel economy consider using
3:31
rolling down the windows at low speeds
3:33
and use the AC at higher speeds Myth
3:36
number five filling up in the morning
3:38
saves fuel This myth is based on the
3:40
idea that fuel is denser when it is cold
3:42
So filling up in the morning gives you
3:44
more gas for the same price Sound
3:46
logical right Wrong Here's the truth Gas
3:50
stations store their fuel underground
3:52
where temperatures remain stable
3:53
throughout the day usually around 55° F
3:57
no matter how hot or cold it is outside
3:59
That means whether you're fueling up at
4:01
morning or afternoon you are getting the
4:03
same volume and energy content The
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difference in fuel density is so small
4:07
that it wouldn't even buy you a single
4:09
extra mile per tank So don't set your
4:11
alarm to beat the sun You're not
4:13
outsmarting the gas station You're just
4:15
making your morning more complicated
4:17
Myth number six manual MPG calculations
4:20
are more accurate than the car's display
4:22
Some old school drivers believe that the
4:24
only way to get a truly accurate measure
4:26
of fuel economy is by doing the math
4:28
themselves dividing miles driven by
4:31
gallons used after each fillup Manual
4:33
method is not always more accurate than
4:35
your vehicle's onboard computer Modern
4:38
vehicles are smarter than you think They
4:40
don't just guess your MPG They use
4:42
real-time data from fuel flow sensors
4:45
throttle position engine load and even
4:47
elevation changes Yes manual math can
4:50
give you a ballpark but it's often off
4:52
by a few tenths due to pump rounding
4:55
tire pressure differences or even how
4:57
level the car was when you filled it
4:59
Onboard displays are not perfect but
5:02
they've gotten very accurate in the last
5:04
decade The best move is cross check once
5:07
in a while but don't dismiss your dash
5:09
It's got a better view under the hood
5:10
than you do Myth number seven it's
5:12
better to idle than restart your engine
5:14
You've probably been told that
5:16
restarting your engine wastes more gas
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than just leaving it running While that
5:20
might have been true for old carbureted
5:22
engines decades ago but it is completely
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false for modern vehicles Modern fuel
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injected engines are incredibly
5:28
efficient and use very little fuel to
5:30
start In fact idling for just 10 seconds
5:32
burns more gas than shutting down and
5:34
starting again That's why newer vehicles
5:36
come with stop start technology It saves
5:39
fuel and reduces emissions especially in
5:41
traffic or long waits So if you're
5:43
waiting outside the school pickup line
5:45
or parked at a long train crossing
5:47
turning off your engine is the smarter
5:49
choice Idling might feel convenient but
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it's an invisible fuel leak with every
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passing second Myth number eight manual
5:56
transmissions are always more fuel
5:57
efficient Back in the day this myth had
6:00
some real truth behind it Manuals were
6:02
simpler lighter and let skilled drivers
6:05
control every gear shift squeezing every
6:08
drop of fuel for better mileage But
6:10
technology has changed the game
6:11
completely Today's automatic
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transmissions are highly advanced with
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continuously variable transmissions and
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dual clutch systems that shift faster
6:21
and more precisely than most people can
6:23
with a stick shift In fact many modern
6:26
automatics actually outperform their
6:28
manual versions in fuel economy
6:30
especially in city driving where manual
6:32
shifting is less efficient That's
6:34
because computers can optimize gear
6:36
changes for efficiency and adapt to
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real-time driving conditions something a
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human driver can't always do Manuals
6:44
still have their fans for control and
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driving enjoyment but when it comes to
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fuel efficiency they're no longer
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automatically the winner Myth number
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nine topping off the tank gives you more
6:54
gas Many drivers continue to squeeze the
6:57
handle after the gas pump automatically
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shuts off thinking they can fit in just
7:01
a little more fuel but topping off can
7:03
actually cause more harm than good
7:05
Modern fuel systems have vapor recovery
7:08
components designed to prevent gasoline
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vapors from escaping into the air
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According to Consumer Report overfilling
7:14
can damage evaporative emission system
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which may lead to costly repairs
7:18
Additionally any extra fuel may spill
7:20
out or end up in the vapor canister not
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the tank To protect your car and the
7:24
environment stop pumping when the nozzle
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clicks off Your engine wallet and the
7:29
environment will thank you Myth number
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10 dirty air filters kill gas mileage
7:34
This myth has been around for ages and
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it sounds logical right If your engine
7:38
can't breathe it can't burn fuel
7:40
efficiently so you burn more gas That
7:43
was absolutely true in older cars with
7:45
carburetors A clogged air filter would
7:47
suffocate the engine and directly reduce
7:49
air flow making the air fuel mixture too
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rich in burning more gas But modern
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engines don't work that way anymore
7:56
Modern vehicles use electronic fuel
7:58
injection systems and mass air flow
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sensors that constantly adjust how much
8:03
fuel is delivered based on how much air
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the engine is getting If your air filter
8:07
is dirty the car's computer compensates
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fuel automatically In fact studies by
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the US Department of Energy have shown
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that a dirty air filter has little to no
8:16
effect on MPG in modern fuel injected
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cars That's all for this video We
8:22
debunked the most common fuel myths with
8:24
facts not folklore So next time someone
8:27
drops one of these fuel myths at the
8:29
pump you'll have the knowledge to steer
8:31
the conversation straight It's time to
8:33
drive smarter save fuel and shut down
8:35
the nonsense one myth at a time See you
8:38
in the next