How Often to Change Oil Filter

Should You Change the Oil Filter Every Oil Change?

Yes — in almost every case, you should replace the oil filter every time you change the oil. The oil filter's job is to trap contaminants, metal particles, and debris from the engine oil. After thousands of miles, it becomes saturated and less effective. Putting fresh oil through a dirty, clogged filter defeats the purpose of the oil change.

The Standard Rule: Change Filter with Every Oil Change

Most vehicle manufacturers and oil filter manufacturers recommend replacing the filter at every oil change. This is the safest, most reliable approach regardless of oil type or change interval.

Oil Filter Change Intervals by Oil Type

• Conventional oil (5,000–7,500 miles): Replace filter at every oil change
• Synthetic oil (7,500–10,000 miles): Replace filter at every oil change
• Extended-life synthetic (up to 15,000 miles): Use an extended-life oil filter rated for the same interval — standard filters may not last 15,000 miles

What Happens If You Don't Change the Filter?

• The filter becomes clogged and bypasses dirty oil directly into the engine
• Contaminants circulate through the engine, increasing wear
• Fresh oil gets contaminated faster by the dirty filter
• Reduced oil flow can cause oil pressure issues

How to Change the Oil Filter

Changing the oil filter is part of every oil change. The key tool is an oil filter wrench set — the WORKPRO 9" and 12" adjustable pliers fit most engine filters on cars and trucks, giving you the grip and leverage to remove even a tightly installed filter. Always position an oil drain pan under the filter before removal — the filter holds oil that will spill when loosened.

When installing the new filter, apply a thin film of fresh oil to the rubber gasket, thread on by hand until snug, then tighten ¾ of a turn. Use an oil funnel when adding new oil to keep the process clean.

Choosing the Right Oil Filter

• Use the filter specified for your vehicle — check your owner's manual or an auto parts store lookup tool
• For extended synthetic oil intervals, use a filter rated for the same mileage
• Premium filters offer better filtration and longer life than budget options

Final Thoughts

Change your oil filter at every oil change — no exceptions. A fresh filter ensures your new oil stays clean and your engine stays protected. Use an oil filter wrench for easy removal, a drain pan to catch spills, and a funnel to add new oil cleanly.