BMW 128i Oil Filters

The oil filter in your BMW 128i serves the same general purpose as your air filters. That's to keep contaminants out of the engine, preventing them from collecting on the many moving parts and affecting performance.

What Oil Filters Do

Even the newest motor oil still contains impurities that survived the refining process. Your oil filter captures those before they can pass on to the engine. Since your engine also generates pollutants when it's running, as parts rub against each other, the motor oil gathers them as it lubricates the engine. The filter traps those as well, leaving clean, viscous oil free to continue on its way.

How to Spot a Failing Oil Filter

Over time, though, your oil filter will degrade with age. More likely, however, it's going to get too blocked up with particulates to continue doing its job as it should. That's when it needs replacing. Signs of trouble include:

• Dark smoke coming from the exhaust
• Your engine begins to sputter
• Reduced engine performance
• Metallic noises coming from the engine
• Dash warning light comes on

Buy Genuine BMW Oil Filters Online

If you're not having any problems, check the owner's manual to determine your replacement schedule. Generally, you can expect to need to change the oil filter every other time you replace the oil in your BMW 128i. When it is time for a new one, make sure to buy one made by BMW. Those are the only oil filters you can count on to fit right, ensuring the tight gasket seal you need. Our online auto parts store has yours in stock and ready to ship, so buy now to save both time and money!