What are the factors affecting the cold filter plugging point of diesel?

[DeLincoln]

Factors affecting the cold filter plugging point of diesel include the composition of diesel (content of straight-chain alkanes). Brief introduction of factors: High density generally leads to an increase in alkane content after hydrogenation, resulting in a rise in the cold filter plugging point temperature. The presence of reforming agents in the reaction can reduce the pour point and lower the cold filter plugging point temperature. Alternatively, the 95% point of diesel can be reduced during atmospheric diesel extraction (reducing density), or pour point depressants can be added to the diesel. Diesel cold filter plugging point: The cold filter plugging point of diesel refers to the lowest temperature at which a diesel sample, cooled under specified conditions, is drawn under a pressure of 1961Pa (200mm water column) to pass through a 363-mesh filter, and the filter is blocked to the point of no flow or the flow rate is less than 20ml/min.

[Barros]

As a long-haul truck driver with years of experience, I must say the cold filter plugging point issue with diesel is really annoying, especially during harsh northern winters. The main influencing factors include the wax content in the diesel itself - higher wax content makes it more prone to congealing at low temperatures, clogging the filter and preventing engine start. Secondly, there's the quality of additives - some cheap additives don't work and actually accelerate crystallization. Then there's storage conditions - prolonged storage increases the risk of separation and deterioration. I've experienced several instances where my truck wouldn't start in -10°C weather, only to find out I'd filled up with low-quality diesel. Now I always use premium brand low-pour-point diesel, add flow improvers before winter, and replace old filters. This approach gives me peace of mind and safety, makes driving much smoother, and eliminates worries about breakdowns affecting delivery schedules.

[LeRobert]

Having been in the repair business for over a decade, I've found that cold filter plugging point issues are quite common when inspecting diesel vehicles, largely related to diesel purity. Contributing factors include a high proportion of paraffin hydrocarbons which can solidify and clog at low temperatures, with the type of additives being most critical – flow improvers must be of good quality or they'll backfire. Additionally, high water and impurity content accelerates filter screen clogging. I always advise customers to choose certified premium diesel and regularly clean/replace filters, especially during seasonal transitions as preventive measures. Don't underestimate these details – poor handling can lead to costly engine wear repairs. Developing these habits can reduce workshop visits, and I personally maintain my own car this way too.

[DeSamantha]

As an average working-class car owner, I find the cold filter plugging point most troubling for fuel efficiency and my wallet. Poor diesel quality in low temperatures leads to wax formation and clogging, causing slow starts that waste fuel or even damage the engine. Key factors include additive effectiveness and fuel batch variations. After using cheap diesel that spiked my winter fuel consumption, switching to premium diesel brought noticeable improvement—saving both money and headaches. Temperature and seasonal changes matter greatly, with sub-zero conditions posing high risks. Now I proactively use low-pour-point diesel as prevention, reducing maintenance costs for easier living.