2018 Toyota Highlander Oil Filter in Peoria, AZ

Yes—the oil filter should be replaced with every oil change on a 2018 Toyota Highlander.

The filter traps the debris your oil carries away; once it loads, the bypass valve opens and oil circulates unfiltered, which quietly accelerates wear. Replacing the filter each time keeps debris from recirculating through the 3.5L V6 and matches fresh oil with fresh filtration. Follow the manufacturer’s maintenance schedule and your vehicle’s service history.

• New, engine-matched filter installed at each oil change
• Prevents bypass operation and unfiltered circulation
• Supports consistent oil pressure and protection

The service includes removing the used filter, renewing sealing surfaces, installing a filter matched to this engine, and verifying no leaks after warm idle.

During an oil and filter service, the old oil is drained, the previous filter and gasket are removed, and the filter base is cleaned. A new filter is fitted and the drain plug sealing surface is renewed where applicable before refilling with the oil grade the manufacturer specifies. After starting the engine, a leak check is performed at the filter and drain plug, and the oil level is rechecked.

• Used filter removed; new, matched filter installed
• Gasket surfaces cleaned; sealing renewed as applicable
• Post-run inspection and final level check

The filter can load up, trigger the bypass valve, and let oil circulate unfiltered—allowing abrasive particles to revisit critical engine parts.

Unfiltered circulation doesn’t usually cause an immediate noise or warning, but it increases wear over time in bearings and valvetrain surfaces. Debris trapped in the old filter also remains in the system longer, undermining the benefit of fresh oil. Replacing the filter with the oil helps protect the 3.5L V6 by restoring proper filtration and stable flow.

• Higher chance of bypass operation and unfiltered oil
• Increased gradual wear on internal components
• Reduced benefit from fresh oil

Yes—the filter is matched to the 3.5-liter V6, and filters are not interchangeable across different engines.

Your Highlander’s 3.5L six-cylinder uses a filter designed for its flow and fitment requirements so it seals correctly and filters effectively at operating temperature and pressure. Using a mismatched filter can compromise sealing, flow, and filtration performance. The correct approach is to install a filter matched to this engine and pair it with the oil grade the manufacturer specifies.

• Engine-matched filter for the 3.5L V6
• Correct fit and sealing at the filter base
• Filtration and flow aligned to engine needs

It can be done, but it’s not recommended because the loaded filter can force bypass and circulate unfiltered oil.

Skipping the filter leaves old debris in the system and can raise flow resistance, especially on startup. When resistance climbs, the bypass valve opens so oil keeps moving—but unfiltered—which defeats the purpose of fresh oil. Changing the filter with the oil is the straightforward way to maintain protection and consistent oil pressure.

• Fresh oil deserves a fresh, matched filter
• Reduces risk of bypass operation
• Supports stable pressure and wear control

Book online using schedule service or schedule appointment, or call the store in Peoria to set a time.

Online scheduling is available 24/7 and lets you choose a time, note concerns, and check service specials before you arrive. If you prefer, call the service team for help selecting an appointment. Bring your 2018 Toyota Highlander in and we’ll fit a filter matched to its 3.5L V6 and verify sealing and leaks after warm idle.

• Use the online portal to pick a time
• Review current service specials before booking
• Call for assistance with scheduling