2023 Hyundai Elantra 2.0L Oil Change — Nu MPI, 5W-30, Step-by-Step DIY Guide

The 2023 Hyundai Elantra 2.0L is the base-engine version of one of the most popular compact sedans in North America. I've done this oil change more times than I can recall, and it's one of the easiest jobs on any modern car: straightforward cartridge filter on top of the engine, easy drain plug access, and a modest 4.2-quart capacity. Dealers charge $70–$95 for this service. DIY parts cost under $30.

One critical spec: the 2023 Elantra 2.0L uses the Nu 2.0 MPI naturally aspirated four-cylinder — not the 1.6T found in the higher trims. The Nu MPI takes 5W-30 full synthetic. If you're unsure which engine you have, check the window sticker or the underhood label — the 2.0L is clearly marked.

Engine and Oil Specs

Item	Spec
Engine	2.0L G4NL Nu MPI DOHC inline-4 (147 hp)
Oil viscosity	5W-30 full synthetic (Hyundai-approved API SN or SP)
Oil capacity	4.2 quarts (4.0L) with filter
OEM oil filter	Hyundai 26320-2AAA0
Alternate filter	Mobil 1 M1-108A, Wix 57356
Drain plug size	14mm
Drain plug torque	26 lb-ft (35 Nm)
Drain plug washer	Hyundai 21513-23001 — replace every change
Oil change interval	7,500 miles (synthetic) per Hyundai maintenance schedule

Tools and Parts List

• Hyundai 26320-2AAA0 oil filter cartridge
• 4.2 quarts 5W-30 full synthetic
• Hyundai 21513-23001 drain plug washer
• 14mm socket (drain plug)
• 27mm or 1-1/16" cap wrench (filter housing)
• Torque wrench (20–35 lb-ft range)
• Drain pan
• Funnel and rags

Cost Comparison

Item	DIY Cost	Shop Cost
5W-30 full synthetic (5 qt)	$20–$26	—
Hyundai OEM filter	$8–$10	—
Drain plug washer	$1	—
Total parts	~$29–$37	—
Labor	$0	$40–$60
Total	~$29–$37	$70–$95

You save $35–$65 every oil change. At 7,500 miles per interval, that's roughly two services per year — about $70–$130 back in your pocket annually.

Step-by-Step Oil Change

1. Warm the Engine (5 minutes)

Idle the Elantra for 5 minutes or drive it briefly. The Nu 2.0 warms up fast, and slightly warm oil drains completely in 5–6 minutes versus 10+ minutes on a cold engine.

Open the hood and remove the oil filler cap (top of engine, labeled with the oil can symbol) to allow air to enter and speed up the drain.

2. Access the Drain Plug

The 2023 Elantra has a minimal underbody shield. On most variants, you can access the drain plug from under the passenger side without removing any panels. The drain plug is on the passenger side of the oil pan.

Use a floor jack and jack stands, or drive onto ramps. The Elantra sits low — ramps are easier.

3. Drain the Oil

Position your drain pan, break the 14mm drain plug loose counterclockwise, and remove by hand. Let the oil drain 5–6 minutes. The Elantra only has 4.2 quarts — it drains faster than larger-displacement engines.

Remove the aluminum drain plug washer and discard it. These are Hyundai's standard aluminum crush-type — they cost about $1 each and the leak prevention they provide is worth every penny.

4. Remove the Oil Filter

The Hyundai 26320-2AAA0 is a cartridge filter in a plastic housing. It's located on top of the engine, driver's side, accessible from above without going underneath. Use a 27mm socket to loosen the housing cap counterclockwise.

Lift the cap out — the filter element comes with it. Remove the old O-ring(s) from the cap. Install new O-ring(s) from the filter kit. Insert the new filter element into the cap, ensure it seats at the bottom.

5. Reinstall the Drain Plug

Install a new Hyundai 21513-23001 washer on the drain plug. Thread it in by hand until snug. Torque to 26 lb-ft (35 Nm).

6. Reinstall the Filter Cap

Thread the filter housing cap back in clockwise by hand until snug. Torque to 17.4 lb-ft (24 Nm). Do not overtighten — plastic housing threads strip easily.

7. Add Oil

Pour in 4 quarts of 5W-30 through the filler cap. Start the engine, let it idle 60 seconds, shut off. Wait 3–5 minutes for oil to drain back into the pan. Check the dipstick — add the remaining ~0.2 quarts to reach the "MAX" mark.

8. Start and Check for Leaks

Idle the engine for 90 seconds. Check for any seeping at the drain plug and filter area. The oil pressure warning light should extinguish within 3–5 seconds of startup.

9. Reset the Maintenance Reminder

In the 2023 Elantra, press the HOME button on the instrument cluster to navigate to the Vehicle section. Scroll to Maintenance → Reset → Oil. Confirm. The amber wrench indicator goes out.

Nu MPI Engine Notes

The naturally aspirated 2.0L in the 2023 Elantra is a reliable, simple engine that responds well to regular maintenance. Unlike the turbocharged 1.6T in the N-Line or N variants, the Nu MPI doesn't have a wastegate, turbo bearings, or intercooler to worry about. Just clean oil, on schedule.

Hyundai's Assurance Program: If your 2023 Elantra is still under Hyundai's 5-year/60,000-mile powertrain warranty, keep your oil change receipts (or take photos of your DIY setup with date and mileage). Hyundai's warranty requires documented oil changes — DIY changes are accepted with proper documentation.

For the full 2023 Elantra service schedule, including cabin air filter, transmission fluid, and brake fluid intervals, see the OwnerDrop maintenance schedules guide.

If you're also looking to save money across all your car's maintenance items — not just oil changes — the OwnerDrop savings guide has a full breakdown.

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Get the full step-by-step guide — use code FIRST15 for 15% off your first month at ownerdrop.com/pricing