2015 Toyota Highlander Oil Filter in Peoria, AZ

Yes—the oil filter should be replaced every time you change the oil on a 2015 Toyota Highlander.

Fresh oil works best with a fresh filter, which traps debris so it does not recirculate through the engine. As a filter loads, its bypass valve can open, allowing unfiltered oil to circulate. Replacing the filter with the oil prevents that quiet loss of protection and helps maintain stable oil pressure and flow between services.

• New filter installed to match the Highlander’s V6 specification
• Sealing surfaces renewed to prevent leaks
• Post-service run and leak check performed

The service includes removing the old filter, installing a matched new filter with a renewed sealing surface, refilling with the specified oil, and checking for leaks after the engine runs.

Technicians also address the drain plug sealing surface, verify oil pressure on restart, and confirm the level after a brief sit. The maintenance reminder is reset when applicable. This complete approach ensures proper filtration, pressure, and sealing before you leave.

• Filter matched to the Highlander’s 3.5L V6
• Oil filled to the correct level and grade
• Maintenance indicator reset as needed

The filter can load with debris, trigger its bypass valve, and let unfiltered oil circulate through the engine.

Oil will still flow, but without filtration fine particles can recirculate across bearings and cam surfaces, increasing wear over time. That’s a quiet kind of risk—pressure may look normal while protection is reduced. Replacing the filter with the oil keeps contaminants contained and helps the engine maintain clean lubrication between services.

• Bypass valve opens when the media is loaded
• Unfiltered oil can accelerate component wear
• Regular oil-and-filter changes prevent recirculation of debris

Yes—the filter is matched to the Highlander’s 3.5-liter, 6-cylinder engine and filters are not interchangeable across different engines.

Proper fit, sealing, and flow characteristics depend on the engine’s design. Using the correct filter helps maintain oil pressure, ensures the bypass valve functions as intended, and supports effective debris capture. During service, we install a filter that matches this engine’s specification rather than a generic alternative.

• Engine displacement: 3.5 liters (3456 cc)
• Cylinder count: V6 configuration
• Correct filter supports pressure, flow, and sealing

It can be done, but it is not recommended because a loaded filter can send unfiltered oil through the bypass valve.

Leaving the old filter in place risks mixing clean oil with trapped debris and reduces the benefit of the oil change. Replacing the filter with the oil keeps the lubrication system balanced—fresh oil, fresh filtration, correct pressure, and reliable flow.

• Filter and oil are designed to be serviced together
• Bypass flow with an old filter defeats filtration
• Paired service maintains consistent engine protection

Use our online tool to schedule service or schedule appointment anytime.

You can also call the store for assistance or check current service specials before you book. If you’re in Peoria or the Phoenix West Valley, our location off Loop 101 makes it convenient to plan your 2015 Toyota Highlander maintenance around your day.

• Fast online scheduling in minutes
• View available time slots that fit your calendar
• See specials before you finalize your visit