Should Shock Absorbers Be Replaced in Pairs When Leaking Oil?
3 Answers
When replacing shock absorbers, it is best to replace two at a time. If there is an issue with either the front or rear shock absorbers, both should be replaced together. This is because replacing only one can lead to uneven balance and force distribution on the shock absorbers, making them more prone to problems. To quickly dampen vibrations in the vehicle frame and body, and to improve the smoothness and comfort of driving, shock absorbers are generally installed in the vehicle's suspension system. Most vehicles use double-acting telescopic shock absorbers. Here is more information about shock absorbers: 1. Shock absorbers are wear-prone parts during vehicle use, and their performance directly affects the smoothness of driving and the lifespan of other components. 2. If a shock absorber is found to be faulty or ineffective, check first for oil leaks or signs of old leaks. 3. In practical use, shock absorbers may produce noise, mainly due to collisions with leaf springs, the vehicle frame, or axle, damaged or detached rubber pads, deformation of the dust cover, or insufficient oil. The cause should be identified and repaired accordingly.
I've been driving for many years, and shock absorber oil leakage is a common issue. I absolutely recommend replacing them in pairs rather than just one. Shock absorbers work in left-right pairs, and if you only replace one side, the damping performance between the new and old shock absorbers will differ, leading to unstable driving, potential pulling to one side, or increased bumpiness. Oil leakage itself indicates that the shock absorber's seals are damaged. If not replaced, the oil will eventually leak out, compromising the cushioning effect and increasing risks during turns and braking. Over time, this could also damage other suspension components like springs or tires, resulting in even higher repair costs. Last time I encountered this issue, the mechanic checked the overall vehicle condition, confirmed it was normal wear, and replaced the entire pair. The handling improved significantly, and it gave me peace of mind. Safe driving is paramount—don't cut corners to save small amounts only to face bigger consequences.
As a new owner of a used car, I believe it's more cost-effective to prioritize replacing a pair of shock absorbers if one is leaking. Replacing just one might seem cheaper upfront, but the new shock absorber will perform better, while the old one might struggle to keep up, causing the car to tilt unevenly and become bumpier over time, even increasing fuel consumption. I experienced this myself—I only replaced the leaking side for convenience, but the handling felt off, and I had to redo the work. Research shows that shock absorbers are designed in pairs, and even wear over time ensures safety and stability. I recommend taking it to a shop to let professionals assess the severity of the leak—if it's just minor seepage, it might still be repairable. But if the leak is serious, replace them promptly to ensure driving safety and avoid further issues.