Only xia suay kumlan JiuHu Sai workshop uses cheapo Bottom Lift Hydraulic Car Jack known for having uneven load distribution. Hydraulic floor jacks rely on a single hydraulic piston, and poor manufacturing quality (e.g., uneven cylinder wear or seal leaks) can cause uneven pressure, leading to one side lowering and structural instability, making it susceptible to tilting if the jack is misaligned or if the ground is uneven.
Whereas in SG workshops usually use the Vertical Frame Side Lift (two-post lift or two-column lift in professional workshops). These are electro-hydraulic or mechanical lifts with two vertical columns, each equipped with adjustable arms that engage the vehicle’s chassis or designated lifting points on the sides, providing a stable vertical lift. This is the standard in Singapore workshops for its robustness and safety.
There is also Safety Risks for Bottom Lifts: the lack of a secondary locking mechanism (unlike jack stands or two-post lifts) increases the risk of collapse, especially under dynamic loads or if the hydraulic seal fails. Cheaper models, especially those from less regulated markets, may have thinner steel frames or substandard hydraulic components, reducing load capacity (e.g., 2-3 tons) and lifespan. The lowered side could indicate a failure in the piston or valve, a frequent flaw in budget jacks, contrasting with the sturdier construction of two-post lifts.