What are the incorrect requirements for hydraulic oil?

[Betty]

An incorrect requirement for hydraulic oil is a low flash point. The flash point refers to the minimum temperature at which a petroleum product, under specified conditions, is heated to the point where its vapor comes into contact with a flame and causes instantaneous ignition. The flash point is an index of the liquid's hazard level; the lower the flash point, the more likely it is to cause a fire. Additional information: Below is an introduction to hydraulic oil: 1. Hydraulic oil is the hydraulic medium used in hydraulic systems that utilize liquid pressure energy. Its functions include: energy transmission, anti-wear, system lubrication, corrosion prevention, rust prevention, and cooling. 2. Hydraulic systems in vehicles and construction machinery use hydraulic oil as the working medium. In these systems, the fluid velocity is relatively low while the pressure is high, hence it is referred to as hydrostatic transmission. 3. Hydraulic oil has a wide range of applications and is the most widely used industrial oil product. Currently, hydraulic components are being developed to be smaller in size and higher in power, leading to increasingly higher system pressures.

[JuniperAnn]

I've seen some car enthusiasts messing around with hydraulic fluid, thinking it's not important in the brake system and opting for cheaper options to save money. That can be deadly! For example, demanding low-viscosity oil or randomly mixing different brands, thinking it saves money, but the low viscosity under high temperatures leads to leaks and brake failure; mixed oils cause sediment, clogging the pipes. Others insist on not following the specified type, like using regular engine oil instead of dedicated hydraulic fluid, which lacks sufficient anti-foaming and anti-corrosion properties—come winter, cold starts lead to poor system lubrication and accelerated wear. Every time I remind them to check the fluid, some drag their feet, insisting on ignoring the oil change intervals, which allows the oil to age, increasing acidity and corroding metal parts. In short, don't cut corners—choose high-quality oil that meets the manufacturer's specifications and change it regularly for safety.

[DelAdeline]

I've seen too many misconceptions about hydraulic fluid in car repairs. Some demand that the fluid must perform perfectly across all temperatures, but each fluid has a specific viscosity index. Expecting it to work flawlessly at -30°C and 100°C is unrealistic—extreme temperatures cause viscosity imbalance, leading to sluggish system response or burst hoses. Another absurd demand is treating the fluid as a universal liquid, mixing it with other fluids like engine oil or water, mistakenly believing it enhances performance. This actually disrupts the fluid's chemical stability, causing foaming, increased rust, and reduced braking effectiveness. Then there's neglecting fluid change intervals—owners often insist on changing it only after over half a year. But hydraulic fluid oxidizes quickly under frequent use, degrading over time and forming sludge that clogs pumps and valves. I always recommend following the manual to check fluid levels and quality, replacing it promptly to avoid costly overhauls.

[HavenLynn]

The requirements for hydraulic oil should not be compromised for convenience. For example, some people insist on using the same oil for all vehicles, ignoring the differences between brands and models, such as SUVs and sedans having different braking systems. The oil parameters need to match the specific application, and incorrect requirements can lead to seal swelling or shrinkage, causing leaks. Others try to save costs by purchasing low-quality oil or skipping filter replacements, which reduces the oil's cleanliness and allows impurities to accumulate, damaging the hydraulic pump. Additionally, some prioritize the oil's appearance, demanding clear and bright colors while neglecting performance test indicators like boiling point and pH value. This can lead to vapor lock under high temperatures, compromising control safety. I recommend learning some basic knowledge and sourcing professional-grade oil—don’t risk major issues for minor savings.

[SanTyler]

Common improper demands include blindly pursuing long-life oils, thinking it saves maintenance, but in reality, hydraulic oil ages quickly, and the cost of demanding no change for three years is high, with rising acidity corroding pipelines. Some also demand excessively high oil viscosity, believing it protects the system, but it increases pump load, leading to overheating and damage. Another mistake is demanding compatibility with all additives, recklessly mixing anti-wear agents that disrupt formulations, causing sediment buildup and valve blockages. Ignoring environmental factors, such as demanding the use of summer oil in low-temperature regions, makes cold starts difficult and accelerates wear. I've seen failures caused by this, such as steering system stiffness, so it's crucial to promptly check and replace the correct oil according to the manual's frequency to ensure smooth driving.