Engine Oil
0W-20
Full Synthetic
Capacity
4.2 qt
with filter
3.8 qt without filter
Oil Filter
26300-35505
Kia (OEM)
OEM spec: API SN Plus
The 2018 Kia Forte takes 0W-20 Full Synthetic with a total capacity of 4.2 quarts (filter included). You’ll need a 17mm socket for the drain plug, torqued to 35 Nm. The OEM oil filter is the Kia 26300-35505, with 2 compatible alternatives listed below. Note: this vehicle has 3 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
⚑ QUICK DIY TIPS FOR THE 2018 KIA FORTE
Torque your drain plug to 35 Nm (26 ft-lbs) to avoid leaks or stripped threads. Using the OEM filter (Kia 26300-35505) is recommended for warranty compliance. Always use 0W-20 Full Synthetic as specified by Kia — using the wrong viscosity can void your powertrain warranty. Check the maintenance schedule below for your next service interval. Viscosity 0W-20
Oil type Full Synthetic
Capacity (with filter) 4.2 qt
Capacity (w/o filter) 3.8 qt
OEM spec API SN Plus
Filter Options
Extended Performance filter
Drain Bolt & Hardware
Socket size 17 mm
Thread M14x1.5
Torque spec 35 Nm
Gasket Crush washer
2nd gen YD (2.0L Nu I4)
Type SP-IV
Capacity 3.5 qt
Change interval 60,000 mi
DOT type DOT 3
Change interval 45,000 mi
Type Long Life
Color Green
Capacity 6.5 qt
Change interval 120,000 mi
Spark Plugs
Type Iridium
Gap 0.044
Quantity 4
Change interval 100,000 mi
Tires
Size 215/55R17
Front pressure 33 PSI
Rear pressure 33 PSI
Wiper Blades
Kia 00009ADU14K1A passenger
Buy 5k mi 7.5k mi 10k mi 15k mi 20k mi 30k mi 50k mi 60k mi 90k mi 100k mi
≈ every 6 months
▸ Change Engine Oil & Filterspark plug
14mm thread, aluminum head
18 ft-lb · 24.4 Nm
21V260000
Kia Motors America (Kia) is recalling certain 2017-2018 Forte vehicles equipped with a 2.0L Nu MPI engine. Foreign particles may stick inside the oil pump, which may cause an oil pump failure and engine damage.
21V622000
Kia Motors America (Kia) is recalling certain 2016-2018 Forte 4-door, Forte Koup 2-door, and 2018-2019 Rio 4-door vehicles. The trunk latch may become damaged, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
22V031000
Kia Motors America (Kia) is recalling certain 2017-2019 Sedona, Soul, Soul EV, 2017-2018 Forte, and 2017 Forte Koup vehicles. The Air Bag Control Unit (ACU) cover may contact a memory chip on the printed circuit board and damage the electrical circuit. Circuit damage may result in deactivated air bags that will not deploy in a crash.
All categories STRUCTURE:BODY EQUIPMENT ADAPTIVE/MOBILITY ELECTRICAL SYSTEM EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL ELECTRICAL SYSTEM:IGNITION POWER TRAIN ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL STRUCTURE POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT ENGINE AND ENGINE COOLING BACK OVER PREVENTION ENGINE AND ENGINE COOLING:EXHAUST SYSTEM EQUIPMENT FUEL SYSTEM, GASOLINE EQUIPMENT:APPLIANCE:AIR CONDITIONER EQUIPMENT:ELECTRICAL SEAT BELTS STEERING EXTERIOR LIGHTING VISIBILITY LATCHES/LOCKS/LINKAGES VISIBILITY:WINDSHIELD WIPER/WASHER FORWARD COLLISION AVOIDANCE ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE ENGINE BACK OVER PREVENTION: WARNINGS
CS2312_TSB_R2 STRUCTURE:BODY 2026-06-08
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to install a Theft Deterrent Ignition Cylinder Protector on certain 2010-2022MY Kia vehicles outlined on page 20, which may not have been equipped with an immobilizer and whose Integrated Body Control Unit (IBU) / Body Control Module (BCM) did receive the Anti-Theft Software Logic upgrade under CS2301/02/03/04/05/06/07/08/09 TSBs. In an effort to help prevent thefts of Kia vehicles, a protective cover will be permanently affixed to the ignition cylinder. This Theft Deterrent Ignition Cylinder Protector prevents the removal of the key lock cylinder thereby preventing access to the ignition tumbler.
PS512 EQUIPMENT ADAPTIVE/MOBILITY 2017-07-14
PITSTOP: QUICK START GUIDE (QSG) DISCOLORATION - Some 2017-2018MY Forte (YDm) vehicles may experience some fading/discoloring (yellowing) of the Quick Start Guide (QSG) installed prior to delivery to your dealer. In the event you encounter this issue, a replacement QSG can be ordered and shipped to your dealer in maximum quantities of five (5) per order, at no charge. Overnight shipping is available at an additional charge to the dealer. When placing your order, reference the part number (A) listed on the back of QSG.
PS511 ELECTRICAL SYSTEM 2017-09-05
PITSTOP - BLUETOOTH® INFORMATION AND TROUBLESHOOTING - This Pitstop contains information on pairing a device on 2018 MY vehicles; the differences in pairing instructions if it is the 1st phone or a 2nd phone that needs to be paired; and how to diagnose and troubleshoot customer Bluetooth complaints.:
Show all 100 TSBs(+97) Private Party
$7,600–$8,400
Dealer Retail
$8,800–$10,000
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
Shop parts for the Kia Forte
Find oil, filters, and maintenance parts for the 2018 Kia Forte on Amazon.
Shop parts ↗ Have info for this vehicle?
Help fellow owners — submit specs from your owner's manual.
Submit specs ⓘ As an Amazon Associate, OilChangeDIY.com earns from qualifying purchases. Product links on this page may be affiliate links. See our affiliate disclosure for details. Always double-check specs against your owner's manual or official OEM documentation.