How Often Should the Engine Lubrication System Be Cleaned?

[Lola]

Lubrication system does not require regular cleaning. Here is relevant information about the lubrication system: 1. System Introduction: The design of the lubrication system should be based on the characteristics and operating conditions of various mechanical equipment, and it always consists of several main components such as hydraulic pumps, oil tanks, filters, cooling devices, heating devices, sealing devices, buffer devices, safety devices, alarms, etc. 2. Lubrication Methods: In addition to the above classifications, lubrication methods can also be categorized based on the type of lubricant supplied, including oil lubrication (or thin oil lubrication), grease lubrication (or dry lubrication), as well as solid lubrication and gas lubrication.

[VanCalvin]

I’ve noticed some drivers recommend cleaning the engine lubrication system every 30,000 to 50,000 kilometers, depending on driving habits. With decades of driving experience, I’ve found that if you frequently drive long distances on highways, you can extend the cleaning interval. However, frequent city driving with stop-and-go traffic leads to quicker engine sludge buildup, often requiring a cleaning every two to three years. The purpose of cleaning is to remove old oil residues and sludge, protecting pistons and bearings. Don’t assume you need a cleaning with every oil change—doing it too often is just a waste of money. Instead, clean when the dipstick shows darker oil or an unusual odor. After cleaning, the car accelerates more smoothly, and the engine’s lifespan can be extended by tens of thousands of kilometers. Of course, combining this with regular maintenance records makes for a smarter approach.

[Sá]

As a beginner just starting to learn car maintenance, frequent lubrication system cleaning isn't necessary. The repair shop suggests cleaning every 40,000-50,000 km for normal driving, and I follow the manual's recommendations. Cleaning helps prevent oil passage blockages and overheating issues, especially when engines are prone to sludge buildup in cold, humid weather. Choose cleaning agents compatible with your engine type, and always replace the oil immediately after cleaning to protect internal friction surfaces. Driving habits affect frequency: smooth highway driving allows longer intervals, while frequent city short trips require earlier cleaning. Consult experienced owners more often - cleaning is affordable and ensures worry-free safety.

[IanAnn]

As an enthusiast, I usually perform lubrication system cleaning when there are abnormal noises or unstable idling. The frequency varies from person to person, averaging around every thirty-five thousand kilometers. Oxidized lubricants form gel-like stains that clog oil passages and affect heat dissipation. Cleaning removes these to ensure proper lubrication. Adjust based on driving conditions: clean earlier in sandy or dusty weather or when frequently carrying heavy loads. After cleaning, the engine returns to quiet operation. Regular cleaning reduces the risk of component wear and is more comprehensive when combined with checking filters and oil quality. A simple and quick process, done in about an hour to protect the car long-term.

[DelEden]

For daily family car use, I clean the lubrication system approximately every two years or every 30,000 miles. Safety comes first—cleaning removes oil sludge to prevent overheating and engine seizure. Always consult a technician's advice, especially when elderly or children are frequent passengers. The cleaning process is straightforward and can be conveniently done during an oil change, offering high cost-effectiveness without compromising fuel economy. Harsh road conditions or prolonged inactivity accelerate sludge buildup, so early cleaning saves major repair costs. Maintaining the lubrication system ensures the engine runs flawlessly and reliably.