fuel additives Hyundai Accent 2017 Owner's Manual

1-3
Introduction
Gasoline containing alcohol ormethanol
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 exam-
ple, "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 prob-
lems and damage to the fuel system,
engine control system and emission con-
trol system.
Discontinue using gasohol of any kind if
drivability problems occur.
"E85" fuel is an alternative fuel com-
prised of 85 percent ethanol and 15 per-
cent 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 gaso- hol.
• 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.
Other fuels
Using fuels such as;
- Silicone (Si) contained fuel,
- Ferrocene (Fe) contained fuel, and
- Other metallic additives containedfuels,
may cause vehicle and engine damage
or cause plugging, misfiring, poor accel-
eration, engine stalling, catalyst melting,
abnormal corrosion, life cycle reduction,
etc.
Also, the Malfunction Indicator Lamp
(MIL) may illuminate.
✽ ✽ NOTICE
Damage to the fuel system or perform-
ance problem caused by the use of these
fuels may not be covered by your New
Vehicle Limited Warranty.
CAUTION
Never use gasohol which contains
methanol. Discontinue use of anygasohol product which impairs dri-vability.
CAUTION
Your New Vehicle Limited Warrantydoes not cover damage to the fuelsystem or any performance prob-lems caused by the use of "E85"fuel.

Introduction
1-4
Gasoline containing MMT
Some gasoline contains harmful man-
ganese-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 per-
formance and affect your emission con-
trol system.
The malfunction indicator lamp on the
cluster may come on.
Do not use methanol
Fuels containing methanol (wood alco-
hol) should not be used in your vehicle.
This type of fuel can reduce vehicle per-
formance and damage components of
the fuel system, engine control system
and emission control system.
Fuel Additives
HYUNDAI recommends that you use
good quality gasolines treated with deter-
gent additives such as TOP TIER
Detergent Gasoline, which help prevent
deposit formation in the engine. These
gasolines will help the engine run clean-
er and enhance performance of the
Emission Control System. For more infor-
mation 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, additives that you can buy
separately may be added to the gasoline.
If TOP TIER Detergent Gasoline is not
available, one bottle of additive added to
the fuel tank at every 7,500mile or every
engine oil change is recommended.
Additives are available from your author-
ized HYUNDAI dealer along with infor-
mation 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 reg-istration and insurance.
Determine that acceptable fuel is avail- able. No special break-in period is needed. 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, keep your engine speed
(rpm, or revolutions per minute)
between 2,000 rpm and 4,000 rpm.
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.
Avoid hard stops, except in emergen- cies, to allow the brakes to seat prop-
erly.
CAUTION
Your New Vehicle Limited Warrantymay not cover damage to the fuelsystem and any performance prob-lems that are caused by the use offuels containing methanol.
VEHICLE BREAK-IN PROCESS

7-7
Maintenance
NORMAL MAINTENANCE SCHEDULE
7,500 miles (12,000 km) or 6 months
❑ Rotate tires
❑ Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Replace engine oil and filter
(7,500 miles (12,000 km) or 12 months)
❑Add fuel additive *1
(7,500 miles (12,000 km) or 12 months)
The following maintenance services must be performed to ensure good emission control and performance. Keep receipts for all
vehicle emission services to protect your warranty. Where both mileage and time are shown, the frequency of service is deter-
mined by whichever occurs first.
*1 : If TOP TIER Detergent Gasoline is not available, one bottle of addi-
tive is recommended. Additives are available from your authorized
HYUNDAI dealer along with information on how to use them. Do not
mix other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.15,000 miles (24,000 km) or 12 months
❑ Rotate tires
❑ Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads (if equipped)
(Continued)
(Continued)
❑Inspect rear brake drums/linings (if equipped)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(15,000 miles (24,000 km) or 24 months)
❑ Add fuel additive *1
(15,000 miles (24,000 km) or 24 months)

Maintenance
7-8
30,000 miles (48,000 km) or 24 months
❑Rotate tires
❑Inspect battery condition
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads (if equipped)
❑Inspect rear brake drums/linings (if equipped)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑Inspect suspension mounting bolts
(Continued)
22,500 miles (36,000 km) or 18 months
❑ Rotate tires
❑ Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Replace engine oil and filter
(22,500 miles (36,000 km) or 36 months)
❑Add fuel additive *1
(22,500 miles (36,000 km) or 36 months)
*1 : 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.
*
2 : Fuel filter & Fuel tank air filter are considered to be maintenance free\
but periodic inspection is recommended for this maintenance sched-
ule depends on fuel quality. If there are some important safety matters
like fuel flow restriction, surging, loss of power, hard starting problem
etc, replace the fuel filter immediately regardless of maintenance
schedule and consult an authorized HYUNDAI dealer for details.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
NORMAL MAINTENANCE SCHEDULE (CONT.)
(Continued)
❑Inspect brake/clutch (if equipped) fluid
❑Inspect fuel filter *2
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *2
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
❑Replace engine oil and filter
(30,000 miles (48,000 km) or 48 months)
❑Add fuel additive *1
(30,000 miles (48,000 km) or 48 months)

7-9
Maintenance
NORMAL MAINTENANCE SCHEDULE (CONT.)
37,500 miles (60,000 km) or 30 months
❑Rotate tires
❑Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect manual transaxle fluid (if equipped)
❑Replace engine oil and filter
(37,500 miles (60,000 km) or 60 months)
❑Add fuel additive *1
(37,500 miles (60,000 km) or 60 months)
45,000 miles (72,000 km) or 36 months
❑ Rotate tires
❑Inspect battery condition
❑ Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads (if equipped)
❑Inspect rear brake drums/linings (if equipped)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(45,000 miles (72,000 km) or 72 months)
❑Add fuel additive *1
(45,000 miles (72,000 km) or 72 months)
*1 : If TOP TIER Detergent Gasoline is not available, one bottle of addi-
tive is recommended. Additives are available from your authorized
HYUNDAI dealer along with information on how to use them. Do not
mix other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.

Maintenance
7-10
60,000 miles (96,000 km) or 48 months
❑Rotate tires
❑Inspect battery condition
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads (if equipped)
❑Inspect rear brake drums/linings (if equipped)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect brake/clutch (if equipped) fluid
(Continued)
(Continued)
❑Inspect fuel filter *2
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *2
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑Inspect drive belts *3
(First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Inspect valve clearance
(Every 60,000 miles (96,000 km) or 72 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
❑Replace engine oil and filter (60,000 miles (96,000 km) or 96 months)\
❑ Add fuel additive *1
(60,000 miles (96,000 km) or 96 months)
NORMAL MAINTENANCE SCHEDULE (CONT.)
52,500 miles (84,000 km) or 42 months
❑ Rotate tires
❑Inspect battery condition
❑ Inspect air cleaner filter
❑Inspect vacuum hose
❑Replace engine oil and filter
(52,500 miles (84,000 km) or 84 months)
❑Add fuel additive *1
(52,500 miles (84,000 km) or 84 months)
*1 : 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.
*
2 : Fuel filter & Fuel tank air filter are considered to be maintenance free\
but periodic inspection is recommended for this maintenance sched-
ule depends on fuel quality. If there are some important safety matters
like fuel flow restriction, surging, loss of power, hard starting problem
etc, replace the fuel filter immediately regardless of maintenance
schedule and consult an authorized HYUNDAI dealer for details.
*
3 : The drive belt should be replaced when cracks occur or tension is reduced excessively.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.

7-11
Maintenance
67,500 miles (108,000 km) or 54 months
❑Rotate tires
❑Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Replace engine oil and filter
(67,500 miles (108,000 km) or 108 months)
❑Add fuel additive *1
(67,500 miles (108,000 km) or 108 months)
NORMAL MAINTENANCE SCHEDULE (CONT.)
*1 : If TOP TIER Detergent Gasoline is not available, one bottle of addi-
tive 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.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
75,000 miles (120,000 km) or 60 months
❑Rotate tires
❑Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads (if equipped)
❑Inspect rear brake drums/linings (if equipped)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
(Continued)
(Continued)
❑Inspect manual transaxle fluid (if equipped)
❑Inspect drive belts *3
(First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(75,000 miles (120,000 km) or 120 months)
❑Add fuel additive *1
(75,000 miles (120,000 km) or 120 months)

Maintenance
7-12
90,000 miles (144,000 km) or 72 months
❑Rotate tires
❑Inspect battery condition
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads (if equipped)
❑Inspect rear brake drums/linings (if equipped)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect brake/clutch (if equipped) fluid
(Continued)
(Continued)
❑Inspect fuel filter *2
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *2
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑Inspect drive belts *3
(First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
❑Replace engine oil and filter
(90,000 miles (144,000 km) or 144 months)
❑Add fuel additive *1
(90,000 miles (144,000 km) or 144 months)
NORMAL MAINTENANCE SCHEDULE (CONT.)
82,500 miles (132,000 km) or 66 months
❑ Rotate tires
❑Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Replace engine oil and filter
(82,500 miles (132,000 km) or 132 months)
❑Add fuel additive *1
(82,500 miles (132,000 km) or 132 months)
*1: If TOP TIER Detergent Gasoline is not available, one bottle of addi-
tive is recommended. Additives are available from your authorized
HYUNDAI dealer along with information on how to use them. Do not
mix other additives.
*
2: Fuel filter & Fuel tank air filter are considered to be maintenance free\
but periodic inspection is recommended for this maintenance sched-
ule depends on fuel quality. If there are some important safety mat-
ters like fuel flow restriction, surging, loss of power, hard starting prob-
lem etc, replace the fuel filter immediately regardless of maintenance
schedule and consult an authorized HYUNDAI dealer for details.
*
3: The drive belt should be replaced when cracks occur or tension is reduced excessively.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.

7-13
Maintenance
NORMAL MAINTENANCE SCHEDULE (CONT.)
97,500 miles (156,000 km) or 78 months
❑Rotate tires
❑Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑ Replace spark plugs (iridium plated, every 97,500 miles)
❑Replace engine oil and filter
(97,500 miles (156,000 km) or 156 months)
❑Add fuel additive *1
(97,500 miles (156,000 km) or 156 months)
105,000 miles (168,000 km) or 84 months
❑ Rotate tires
❑Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads (if equipped)
❑Inspect rear brake drums/linings (if equipped)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
(Continued)
*1 : If TOP TIER Detergent Gasoline is not available, one bottle of addi-
tive 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.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
(Continued)
❑Inspect drive belts *3
(First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(105,000 miles (168,000 km) or 168 months)
❑Add fuel additive *1
(105,000 miles (168,000 km) or 168 months)

Maintenance
(Continued)
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *2
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑Inspect drive belts *3
(First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Inspect valve clearance
(Every 60,000 miles (96,000 km) or 72 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
❑Replace engine oil and filter
(120,000 miles (192,000 km) or 192 months)
❑Replace coolant (First, 120,000 miles (192,000 km) or 120 months
after every 30,000 miles (48,000 km) or 24 months)
❑Add fuel additive *1 (120,000 miles (192,000 km) or 192 months)
NORMAL MAINTENANCE SCHEDULE (CONT.)
112,500 miles (180,000 km) or 90 months
❑ Rotate tires
❑Inspect battery condition
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect manual transaxle fluid (if equipped)
❑Replace engine oil and filter
(112,500 miles (180,000 km) or 180 months)
❑Add fuel additive *1
(112,500 miles (180,000 km) or 180 months)
120,000 miles (192,000 km) or 96 months
❑ Rotate tires
❑Inspect battery condition
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads (if equipped)
❑Inspect rear brake drums/linings (if equipped)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect brake/clutch (if equipped) fluid
❑Inspect fuel filter *2
(Continued)
*1: If TOP TIER Detergent Gasoline is not available, one bottle of addi-
tive is recommended. Additives are available from your authorized
HYUNDAI dealer along with information on how to use them. Do not
mix other additives.
*
2: Fuel filter & Fuel tank air filter are considered to be maintenance free\
but periodic inspection is recommended for this maintenance sched-
ule depends on fuel quality. If there are some important safety mat-
ters like fuel flow restriction, surging, loss of power, hard starting prob-
lem etc, replace the fuel filter immediately regardless of maintenance
schedule and consult an authorized HYUNDAI dealer for details.
*
3: The drive belt should be replaced when cracks occur or tension is reduced excessively.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
7-14