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2018 Hyundai Elantra oil capacity, type & filter

The 2018 Hyundai Elantra takes 4.4 qt of 5W-30 (1.4L 4-Cyl Turbo) and 4.8 qt of 5W-30 (1.6L 4-Cyl Turbo) and 4.2 qt of 5W-20 (2.0L 4-Cyl). Select your engine below before buying.

2018 Hyundai Elantra oil specs by engine
Engine Capacity Oil Type Filter
1.4L 4-Cyl Turbo 4.4 qt 5W-30 PRO-TEC PXL51334
1.6L 4-Cyl Turbo 4.8 qt 5W-30 PRO-TEC PXL51334
2.0L 4-Cyl 4.2 qt 5W-20 PRO-TEC PXL51334

Match one of 3 checked engine options before buying oil or a filter. Also check 2018 Hyundai Elantra GT .

1.4L 4-Cyl Turbo
Capacity 4.4 qt i Capacity condition is not listed in the checked data, so confirm whether the service-fill amount includes a new filter before adding oil. See how we verify. Learn how we verify fitment Verified fit Buy at least 5 qt total; listed capacity is 4.4 qt.
Oil type 5W-30 OEM oil approval is not source-backed on this page; confirm the bottle or owner's manual before checkout. Verified fit
Oil Filters Options cross-checked
PRO-TEC Shown first PXL51334 Search PXL51334 AMSOIL EA15K20 Search EA15K20 WIX 51334 Search 51334 AMSOIL EA15K01 Search EA15K01 AMSOIL EA15K02 Search EA15K02 Purolator L14459 Search L14459

PRO-TEC PXL51334 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.

1.6L 4-Cyl Turbo
Capacity 4.8 qt i Capacity condition is not listed in the checked data, so confirm whether the service-fill amount includes a new filter before adding oil. See how we verify. Learn how we verify fitment Verified fit Buy at least 5 qt total; listed capacity is 4.8 qt.
Oil type 5W-30 OEM oil approval is not source-backed on this page; confirm the bottle or owner's manual before checkout. Verified fit
Oil Filters Options cross-checked
PRO-TEC Shown first PXL51334 Search PXL51334 AMSOIL EA15K20 Search EA15K20 WIX 51334 Search 51334 AMSOIL EA15K01 Search EA15K01 AMSOIL EA15K02 Search EA15K02 Purolator L14459 Search L14459

PRO-TEC PXL51334 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.

2.0L 4-Cyl
Capacity 4.2 qt i Capacity condition is not listed in the checked data, so confirm whether the service-fill amount includes a new filter before adding oil. See how we verify. Learn how we verify fitment Verified fit Buy at least 5 qt total; listed capacity is 4.2 qt.
Oil type 5W-20 i Based on 2 checked sources: Pennzoil OATS and Castrol (Olyslager). Additional cross-check is still pending: agreement across all checked oil-type sources. Use it as a reference, then confirm the viscosity grade for this engine before checkout. See how we verify. Learn how we verify fitment OEM oil approval is not source-backed on this page; confirm the bottle or owner's manual before checkout.
Oil Filters Options cross-checked
PRO-TEC Shown first PXL51334 Search PXL51334 AMSOIL EA15K20 Search EA15K20 WIX 51334 Search 51334 AMSOIL EA15K01 Search EA15K01 AMSOIL EA15K02 Search EA15K02 Purolator L14459 Search L14459

PRO-TEC PXL51334 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.

5 sources checked Last checked: 2026-06-23 How we verify →

Where to Buy View Data Sources
Buy oil & filters:
Walmart → AutoZone → Amazon → O'Reilly →
Full synthetic options for 5W-30
Mobil 1 Extended Performance 5W-30 → Castrol Edge 5W-30 → Pennzoil Platinum 5W-30 →

Search paths only — confirm your OEM viscosity spec and quantity before checkout.

Full synthetic options for 5W-20
Mobil 1 Extended Performance 5W-20 → Castrol GTX Magnatec 5W-20 → Pennzoil Platinum 5W-20 →

Search paths only — confirm your OEM viscosity spec and quantity before checkout.

2018 Hyundai Elantra oil specs: capacity conditions and filter notes

Which engine applies?

Check the door jamb sticker, owner's manual, or displacement badge on the engine cover. Match it to the engine options listed above before buying oil or a filter.

Filter part numbers

All listed filter part numbers are compatible alternatives for your vehicle. Choose any one brand, then confirm the exact part number at checkout.

Verify before checkout

Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.

Source coverage for the 2018 Hyundai Elantra

Capacity sources

Supported by Pennzoil OATS and AMSOIL Lookup.

Oil type sources

Supported by Pennzoil OATS and Castrol (Olyslager).

Filter sources

Supported by Purolator Part Finder, RockAuto, and AMSOIL Lookup.

Source coverage

5 checked source rows for the 2018 Hyundai Elantra.

Before ordering for this 2018 Hyundai Elantra

Checkout verification checklist
1.4L 4-Cyl Turbo Verified fit Buy →
Capacity
4.4 qt
Oil type
5W-30
Interval
6,000 mi / 12 mo
Filter
PRO-TEC PXL51334
1.6L 4-Cyl Turbo Verified fit Buy →
Capacity
4.8 qt
Oil type
5W-30
Interval
6,000 mi / 12 mo
Filter
PRO-TEC PXL51334
2.0L 4-Cyl Buy →
Capacity
4.2 qt
Oil type
5W-20
Interval
7,500 mi / 12 mo
Filter
PRO-TEC PXL51334

Source check: Last checked 2026-06-23 from Pennzoil OATS, RockAuto, AMSOIL Lookup, Purolator Part Finder, and Castrol (Olyslager).

Hyundai Elantra oil specs by year

This table includes checked Hyundai Elantra model years available in our database.

Year Capacity Oil type Filter
2025 5.1 qt (multiple engines) 0W-20 WIX 51032
2024 5.1 qt (multiple engines) 0W-20 WIX 51032
2023 5.1 qt (multiple engines) 0W-20 WIX 51032
2022 4 qt (multiple engines) 0W-20 Purolator L14459
2021 5.1 qt (multiple engines) 0W-20 WIX 51032
2020 4.4 qt (multiple engines) 5W-30 PRO-TEC PXL51334
2019 4.4 qt (multiple engines) 5W-30 AMSOIL EA15K20
2018 Current page 4.4 qt (multiple engines) 5W-30 PRO-TEC PXL51334
2017 4.4 qt (multiple engines) 5W-30 AMSOIL EA15K20
2016 4.2 qt (multiple engines) 5W-20 AMSOIL EA15K20
2015 4.2 qt (multiple engines) 5W-20 AMSOIL EA15K20
2014 4.2 qt (multiple engines) 5W-20 AMSOIL EA15K20
2013 4.2 qt (multiple engines) 5W-20 AMSOIL EA15K20
2012 4.2 qt (multiple engines) 5W-20 AMSOIL EA15K20
2011 4.2 qt (multiple engines) 5W-20 Purolator L14459
2008 4.2 qt 5W-20 AMSOIL EA15K20
2005 4.2 qt 10W-30 AMSOIL EA15K20

How we verified 2018 Hyundai Elantra oil data

How we verify fitment

Checked fitment data. Last checked: 2026-06-23.

This page checked 5 sources for the 2018 Hyundai Elantra. The table lists which checked source contributed capacity, oil type, or filter evidence.

We checked leading oil brands and aftermarket filter catalogs so you don't have to.

Confidence
Cross-check pending i Some oil fields are based on checked source data but still need stronger cross-check evidence. Review area: 2.0L 4-Cyl oil type. Use the listed values as references and confirm the exact engine before ordering or adding oil. See how we verify. Learn how we verify fitment
Sources checked
5
Last checked
2026-06-23
Field-level source support
  • Capacity: Pennzoil OATS and AMSOIL Lookup
  • Oil type: Pennzoil OATS and Castrol (Olyslager)
  • Filter: Purolator Part Finder, RockAuto, and AMSOIL Lookup
  • Change interval: Pennzoil OATS and Castrol (Olyslager)
Source Supports Checked Link
Pennzoil OATS Capacity, Oil type 2026-06-23 Visit brand site
RockAuto Filter 2026-06-23 Checked source
AMSOIL Lookup Capacity, Filter 2026-06-23 Visit brand site
Purolator Part Finder Filter 2026-06-23 Visit brand site
Castrol (Olyslager) Oil type 2026-06-23 Visit brand site

2018 Hyundai Elantra maintenance checklist

One part checked. Look up the rest while you're here.

Where to buy

These are retailer search paths for your vehicle. The specs above are checked — use the retailer's vehicle selector at checkout to confirm before ordering.

This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence.

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