Can motorcycle engine oil still be used after more than 4 years?

[OAsher]

Motorcycle engine oil cannot be used after more than 4 years and needs to be replaced with new oil. Motorcycle oil change intervals: For new motorcycles, the first oil change is generally around 300 kilometers, the second around 500 kilometers, and the third around 800 kilometers. After the break-in period, oil changes can typically be done every 2,000-3,000 kilometers. Consequences of not changing the oil: If the oil is not changed for a long time, once it deteriorates and loses its performance, it will cause the lubrication properties of the bearings and the lubrication and cooling functions of mechanical transmission components to disappear, thereby damaging the engine, with effects similar to those of oil deficiency.

[DiGemma]

As a seasoned motorcyclist with over a decade of experience, I must say using the same engine oil for more than four years is absolutely unacceptable. Motorcycle engine oil isn't as durable as car oil—it oxidizes and deteriorates over time, absorbing moisture and dust from the air, significantly reducing its lubricating effectiveness. My own bike once suffered accelerated internal engine component wear due to neglected oil changes, costing me over a thousand yuan in repairs. Motorcycle maintenance is crucial, with typical oil change intervals ranging from six months to a year. Even if you ride infrequently, the oil will still age and thicken, failing to protect critical components. Remember to regularly check the oil's color and viscosity—darkening or thinning are clear warning signs. Changing to fresh oil is simple; spending a little at a professional shop can prevent major issues. Don't gamble with your beloved bike to save a few bucks.

[DelMaci]

I always pay close attention to motorcycle maintenance details. Engine oil that's been used for four years definitely needs replacement. Engine oil is like the blood of a vehicle - prolonged storage leads to accumulated dirt and acidic substances, causing lubrication failure. Motorcycle engines are more sensitive; old oil can cause internal rust or deposit formation, accelerating wear at best or leading to complete engine failure at worst. The maintenance manual specifies changing it at least once a year, and I always keep records to track the dates. I recommend not cutting corners - use test strips or visit a repair shop to check oil quality. Early oil changes ensure safety and provide peace of mind while riding.

[DelDavid]

Someone in my social circle had an accident due to using expired engine oil. The oil had been sitting for over four years and had oxidized and deteriorated, losing almost all its lubricating ability. Motorcycle engines are small, so poor oil quality can easily lead to cylinder scoring or overheating. The normal oil change interval is six months to a year, and exceeding this period poses significant risks. When riding, we should regularly check the oil dipstick—if the color darkens, it's time for a change. Maintenance isn't expensive; a single oil change costs just a few dozen yuan. Don't wait until you're stranded on the road to regret it.