2018 Hyundai Ioniq Hybrid Oil Filter in Peoria, AZ

Yes—the oil filter is replaced with the oil because a loaded filter can open its bypass valve and let unfiltered oil circulate.

This inline 4‑cylinder engine relies on clean oil to protect bearings, cams, and timing components. The filter holds debris the oil picks up, and once full, the bypass keeps oil flowing but not filtered. Changing both together restores filtration and additive performance.

• Prevents unfiltered oil from circulating after bypass opens
• Keeps fresh oil from carrying old contaminants
• Maintains consistent oil pressure and protection

The service installs a filter matched to this engine, renews the seal, refills with the manufacturer‑specified oil grade, runs the engine, and checks for leaks.

Technicians clean the sealing surfaces, torque the filter correctly, and confirm oil level after the engine has run. This process ensures the new filter seals under heat and pressure and that no seepage occurs at the filter or drain point.

• Engine‑matched filter installed and torqued
• Gasket/O‑ring replaced and sealing surfaces cleaned
• Run test and post‑run leak inspection

The filter can load with debris, open its bypass valve, and allow unfiltered oil to circulate, increasing internal wear over time.

Unfiltered oil still lubricates, but abrasive particles are no longer trapped, affecting journals and cam surfaces. Contaminants also shorten the life of fresh oil, reducing protection before the next service.

• Bypass valve flow means oil is unfiltered
• Higher wear on bearings and valvetrain
• Faster degradation of new oil

Yes—the filter is matched to the 1.6‑liter inline 4‑cylinder engine, and filters are not interchangeable across engines.

Correct fitment ensures proper sealing, filtration area, and bypass characteristics for this powertrain. Using the wrong filter can compromise oil pressure or filtration and risk leaks. Your service advisor will select the proper filter for this engine.

• Engine‑specific fit and bypass calibration
• Correct gasket size and thread match
• Designed for the 1.6L inline‑4 architecture

It can be done, but it is not recommended because the used filter can send unfiltered oil through the bypass and contaminate fresh oil.

Leaving the old filter in place undermines the benefit of new oil and can accelerate wear. Manufacturer schedules and inspection findings guide service timing, but best practice is to replace both together.

• Fresh oil plus fresh filter restores full protection
• Reduces risk of bypassed, unfiltered flow
• Supports consistent oil pressure and cleanliness

Use our online portal to schedule service or schedule appointment, or call the store for assistance.

Booking online lets you choose a time, note concerns, and review service specials before you arrive. If you prefer, call and a representative will help you set an appointment that fits your day in Peoria.

• Click to schedule service via our online scheduler
• Review current service specials beforehand
• Call for live assistance with scheduling