2023 HYUNDAI ELANTRA fuel additives

Introduction........................................................................\
............................. 1-2
Hyundai Motor America ........................................................................\
......... 1-2
Guide to Hyundai Genuine Parts ...................................................................\
1-3
How to Use This Manual ........................................................................\
.........1-4
Safety Messages ........................................................................\
.....................1-4
Fuel Requirements ........................................................................\
..................1-5
Gasoline containing alcohol or methanol .............................................................1-6
Using Fuel Additives (except Detergent Fuel Additives) ......................................1-6
Gasoline containing MMT ........................................................................\
..............1-6
Detergent Fuel Additives ........................................................................\
................ 1-7
Operation in foreign countries ........................................................................\
....... 1-7
Vehicle Modifications ........................................................................\
............. 1-7
Vehicle Break-In Process ........................................................................\
........ 1-7
Vehicle Data Collection and Event Data Recorders .................................... 1-8
1. Foreword
1

Foreword1-6
Gasoline containing alcohol or
methanol
Gasohol, a mixture of gasoline and
ethanol (also known as grain alcohol) are
being marketed along with or instead
of leaded or unleaded gasoline. For
example, “E15” is a gasohol comprised of
15% ethanol and 85% gasoline.
Do not use gasohol containing more than
15% ethanol, and do not use gasoline or
gasohol containing any methanol. Either
of these fuels may cause drivability
problems and damage to the fuel
system, engine control system and
emission control system.
Discontinue using gasohol of any kind if
drivability problems occur.
“E85” fuel is an alternative fuel
comprised of 85 percent ethanol and 15
percent gasoline, and is manufactured
exclusively for use in Flexible Fuel
Vehicles. “E85” is not compatible with
your vehicle. Use of “E85” may result in
poor engine performance and damage
to your vehicle’s engine and fuel system.
HYUNDAI recommends that customers
do not use fuel with an ethanol content
exceeding 15 percent.
NOTICE
To prevent damage to your vehicle’s
engine and fuel system:

[ Never use gasohol which contains
methanol.

[ Never use gasohol containing more
than 15% ethanol.

[ Never use leaded fuel or leaded
gasohol.

[ Never use “E85” fuel.
Your New Vehicle Limited Warranty
does not cover damage to the fuel
system or any performance problems
caused by the use of “E85” fuel.
Using Fuel Additives (except
Detergent Fuel Additives)
Using fuel additives such as:
- Silicone fuel additive
- Ferrocene (iron-based) fuel additive
- Other metallic-based fuel additives
may result in cylinder misfire, poor
acceleration, engine stalling, damage
to the catalyst, or abnormal corrosion,
and may cause damage to the engine
resulting in a reduction in the overall life
of the powertrain. - The Malfunction Indicator Lamp (MIL) may illuminate.
NOTICE
Damage to the fuel system or
performance problem caused by the
use of these fuels or fuel additives may
not be covered by your New Vehicle
Limited Warranty.
Gasoline containing MMT
Some gasoline contains harmful
manganese-based fuel additives such
as MMT (Methylcyclopentadienyl
Manganese Tricarbonyl).
HYUNDAI does not recommend the use
of gasoline containing MMT.
This type of fuel can reduce vehicle
performance and affect your emission
control system.
The malfunction indicator lamp on the
cluster may come on.

01
1-7
Detergent Fuel Additives
HYUNDAI recommends that you use
good quality gasolines treated with
detergent additives such as TOP TIER
Detergent Gasoline, which help prevent
deposit formation in the engine. These
gasolines will help the engine run
cleaner and enhance performance of
the Emission Control System. For more
information on TOP TIER Detergent
Gasoline, please go to the website (www.
toptiergas.com).
For customers who do not use TOP Tier
Detergent Gasoline regularly, and have
problems starting or the engine does
not run smoothly, detergent-based
fuel additives that you can purchase
separately may be added to the gasoline.
If TOP TIER Detergent Gasoline is
not available, one bottle of additive
added to the fuel tank according to the
maintenance schedule is recommended
(refer to the Maintenance Schedule in
chapter 8).
Additives are available from your
authorized HYUNDAI dealer along with
information on how to use them. Do not
mix other additives.
Operation in foreign countries
If you are going to drive your vehicle in
another country, be sure to:

[Observe all regulations regarding
registration and insurance.

[ Determine that acceptable fuel is
available.
[
This vehicle should not be modified.
Modification of your vehicle could
affect its performance, safety or
durability and may even violate
governmental safety and emissions
regulations.
In addition, damage or performance
problems resulting from any
modification may not be covered
under warranty.

[ If you use unauthorized electronic
devices, it may cause the vehicle to
operate abnormally, wire damage,
battery discharge and fire. For your
safety, do not use unauthorized
electronic devices.
9(+,&/(%5($.
Ø,1
PROCESS
By following a few simple precautions for
the first 600 miles (1,000 km) you may
add to the performance, economy and
life of your vehicle.

[Do not race the engine.

[ While driving, avoid sudden
acceleration and stop.

[ Do not maintain a single speed for
long periods of time, either fast or
slow. Varying engine speed is needed
to properly break-in the engine.

[ Fuel economy and engine
performance may vary depending
on vehicle break-in process and be
stabilized after 4,000 miles (6,000
km). New engines may consume more
oil during the vehicle break-in period.

[ Avoid hard stops, except in
emergencies, to allow the brakes to
seat properly.

[ Do not tow a trailer during the first
1,200 miles (2,000 km) of operation.
VEHICLE MODIFICATIONS

09
9-9
Normal Maintenance Schedule
MAINTENANCE INTERVALS
MAINTENANCE
ITEM Months 12 24 36 48 60 72 84 96 108 120 132 144 156
Miles×1,000 8 16 24 32 40 48 56 64 72 80 88 96 104 Km×1,000 13 26 39 52 65 78 91 104 117 130 143 156 169
Engine oil and engine oil filter *
1
Smartstream
G2.0 Atkinson
RRRRRRRRRRRRR
Smartstream
G1.6 T-GDi
RRRRRRRRRRRRR
Fuel additives
*2
Add fuel additives every 8,000 miles (13,000 km) or 12 months
Air cleaner filter I I R I I R I I R I I R I
Air intake hose I I I I I I I I I I I I I
Spark plugs Smartstream
G2.0 Atkinson
Replace every 96,000 miles
Smartstream
G1.6 T-GDi Replace every 48,000 miles
Rotate tires Rotate tires every 8,000 miles (13,000 km) or 12 months
Cabin air filter RRRRRR
Drive belts
*3
At first, inspect at 48,000 miles (78,000 km) or 72 months.
Thereafter, inspect every 8,000 miles (13,000 km) or 12 months
R: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.*1 :
Requires API SN PLUS (or above) grade engine oil. If a lower grade engine oil is used, then the engine oil and engine oil filter
must be replaced at every 5,000 miles (8,000 km) or 6 months as indicated for severe maintenance condition.
*2 :
If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from your
authorized HYUNDAI dealer along with information on how to use them. Do not mix other additives.
*3 :
The drive belt should be replaced when cracks occur or tension is reduced excessively.
❈ As it is normal for engine oil to be consumed during driving, the amount of engine oil should be checked regularly.
❈ The replacement cycle of engine oil is set by the period which the performance of our recommended engine oil is maintained. So, if recommended engine oil is not used, a replacement is required as indicated severe usage condition.