2018 Nissan 370Z Oil Filter in Mesa, AZ

Yes—the oil filter is replaced with the oil because once the media loads, the filter’s bypass valve can open and oil circulates unfiltered.

Replacing the filter each service removes captured debris and restores full filtration margin. The bypass valve protects oil flow, but it does not clean the oil, which is why stretching a filter across two changes isn’t advised. Follow the manufacturer’s maintenance schedule and your driving conditions when planning service.

• Fresh filter restores debris-holding capacity.
• Reduces risk of unfiltered oil during high demand.
• Supports stable oil pressure and engine longevity.

The old filter is removed, sealing surfaces are renewed, a matched new filter is installed, and the engine is run to check for leaks and proper oil level.

This happens as part of an oil and filter service: drain used oil, fit a new filter that matches the 370Z’s 3.7L V6, refill with the oil grade the manufacturer specifies, and verify no leaks at the filter or drain plug. A final level check confirms the fill after the engine has circulated the oil.

• Remove and replace oil filter with engine-matched unit.
• Renew gasket/sealing surfaces and torque correctly.
• Run engine and inspect for leaks, then recheck level.

The media loads with debris, the bypass valve may open, and oil can circulate unfiltered, quietly increasing wear over time.

Unchanged filters reduce debris-holding capacity and can restrict flow, especially under high RPM or hot conditions. The bypass valve maintains oil supply but doesn’t remove contaminants, which continue to circulate. That’s why the filter is replaced with the oil rather than every other service.

• Higher particle load recirculates through bearings and cams.
• Potential for pressure fluctuations under demand.
• Accelerated wear that’s hard to detect early.

Yes—the filter is matched to the 3.7-liter, six-cylinder engine and filters are not interchangeable across different engines.

Proper fit and filtration characteristics depend on the engine’s design, oil flow, and sealing interface. Using a matched filter helps maintain correct oil pressure and contamination control. The right filter also ensures the bypass valve behavior aligns with the 2018 Nissan 370Z’s lubrication system.

• Engine-matched sealing and thread specifications.
• Correct media capacity for a 3.7L V6’s flow.
• Bypass valve calibrated for this application.

It can be done, but it is not recommended because the loaded filter can force bypass operation and send unfiltered oil through the engine.

Skipping the filter undermines the benefits of fresh oil. The filter holds the debris the oil carries away; leaving it in place reduces capacity and can compromise pressure under load. For balanced protection, replace the filter with the oil at each service interval.

• Maximizes debris removal with fresh media.
• Helps stabilize pressure at high RPM/temperature.
• Aligns with typical manufacturer guidance.

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