Does a Flush Machine Oil Change Require Filter Replacement?

[LenaAnn]

The concept of replacing the filter applies only to engine oil changes. However, engine oil changes do not require the use of a flush machine. Only transmission fluid involves replacement via a flush machine, but transmission fluid does not have a filter at all. Additional information: Here are details on automotive transmission fluid replacement: 1. The replacement interval for automatic transmission fluid is every 2 years or 40,000 kilometers. 2. Due to the highly precise internal structure of automatic transmissions and the high cost of repairs, coupled with the fact that the commonly used gravity drain method cannot fully replace the fluid, it is crucial not to delay automatic transmission fluid changes to avoid greater losses. 3. The transmission fluid replacement points are located on the transmission housing with two bolts: the upper bolt serves as the fill port, and the lower bolt is the drain port.

[Marques]

As a long-time car enthusiast, I always replace the oil filter when using a circulation machine for oil changes. The reason is simple: the oil filter is the guardian of the engine, specifically designed to block metal shavings, dust, and impurities in the oil. If you don't replace it, the accumulated contaminants in the old filter will directly pollute the newly added oil. This not only wastes the purpose of circulation oil changes—which is to more thoroughly remove old oil—but also prevents the new oil from flowing into critical engine parts. I've learned my lesson a few times from not replacing the filter: in the short term, the engine noise increased, oil pressure became unstable, and parts almost got damaged. Replacing the filter is inexpensive, costing just a few dozen bucks, but it ensures smooth circulation of the new oil and extends the car's lifespan. Don't overlook this small detail—it's a fundamental part of maintenance.

[JadeFitz]

I remember when I first learned about car maintenance years ago, a friend helped me change the oil using a flushing machine but forgot to replace the filter. Within less than a month, the car struggled to accelerate, and a check at the repair shop revealed the filter was completely clogged, with old contaminants flowing back and ruining the new oil. Since then, I've developed a habit: every oil change includes a filter replacement, even though the flushing machine can replace oil more efficiently. Filters aren't permanent; they wear out over time, especially during the flushing process where new oil passing through an old filter can actually cause more harm. Now I do it myself to ensure both oil and filter are changed. Though it's a bit more hassle, it saves me from major repairs and protects the engine. After developing this regular replacement habit, my car has run over a hundred thousand kilometers and still performs as smoothly as new.

[LaJessica]

Never change the oil without replacing the filter. The filter acts like a gatekeeper for oil cleanliness, blocking contaminants from entering the engine. After using a circulation machine for oil change, residue remains in the filter. If not replaced, these contaminants will mix with the new oil and accelerate engine wear. I often remind friends and family about this—a small oversight could lead to oil passage blockage or bearing seizure. To ensure driving safety, always replace the filter during every maintenance service. It's cost-effective and worry-free.

[DeAmir]

When I first started learning about car maintenance, I wasn't sure if I needed to replace the oil filter during a machine oil change. After asking the mechanic, I understood it's a must. The filter stores debris from the old oil, and if you don't replace the filter when adding new oil, contamination happens faster. Now, I replace the filter every time I change the oil—it's a simple step: unscrew the old one and screw in the new one, done in a minute or two. Don't skip this step; it helps the engine run smoother.

[VanEmmanuel]

From a cost-saving perspective, changing the oil filter during an oil change is very cost-effective. A filter costs just over ten dollars, but skipping it could lead to engine damage costing thousands in repairs. The purpose of using a flushing machine is to thoroughly clean the engine oil, and not changing the filter undermines this effort. Based on my experience: regularly replacing the filter reduces failure rates, protecting your car and saving on repair costs. Don't risk major losses for minor savings.