Why Can't Wet Dual Clutch Transmission Fluid Be Changed with a Flushing Machine?
2 Answers
Wet dual clutch transmission fluid cannot be changed with a flushing machine. Engine Oil Introduction: Engine oil, also known as engine lubricant, has a density of approximately 0.91×10³ (kg/m³). It serves multiple functions such as lubrication and wear reduction, auxiliary cooling, sealing and leakage prevention, rust and corrosion protection, and shock absorption. Often referred to as the 'blood' of a car, engine oil consists of two main components: base oil and additives. The base oil is the primary constituent of lubricants, determining their fundamental properties, while additives are used to compensate for and enhance the shortcomings of the base oil, providing additional performance benefits. Additives are a crucial part of lubricants. Engine Oil Classification: Based on the type of base oil, engine oils available in the market can be broadly categorized into mineral oils and synthetic oils (vegetable oils are not considered due to their scarcity). Synthetic oils are further divided into full synthetic and semi-synthetic oils.
I've driven several cars with wet dual-clutch transmissions, and changing the oil is much more particular. Last time during maintenance, I wanted to try the flush machine, but the technician immediately stopped me, saying that the oil in wet clutches needs to soak the clutch plates for cooling and lubrication. The flush machine could easily stir up old oil contaminants, clog oil passages, and damage components, causing more trouble. Although the gravity method is slower, it's more reliable and safer, allowing the oil to drain more thoroughly. Each oil change requires precise measurement; otherwise, it could affect the transmission's performance. I advise car owners not to rush the process—find a reputable repair shop and follow the manufacturer-recommended procedures. Spending a bit more now is better than paying for major repairs later.
