Should Transmission Fluid Be Replaced at a 4S Shop or Outside?
4 Answers
It is recommended to replace the transmission fluid at a 4S shop. Below are the precautions for replacing automotive transmission fluid: Replacing the Filter: When replacing transmission fluid, it's not just the fluid that needs to be changed; there are two other components that require replacement and maintenance. One is the transmission fluid filter, which functions similarly to an oil filter by removing impurities from the lubricating fluid. Cleaning the Transmission Oil Pan: After removing the oil pan, you will find a thick layer of sludge mixed with metal shavings. If not thoroughly cleaned, even new transmission fluid will be significantly less effective. Additionally, when reinstalling the oil pan, it is crucial to replace the sealing gasket to ensure proper sealing, a step that should not be overlooked.
I've been driving for twenty years, and changing transmission oil is a job best left to the 4S shop. For new cars under warranty, going elsewhere might void the warranty if something goes wrong. 4S shops use manufacturer-specified oil, have professional technicians, and reliable tools and equipment. Although it costs significantly more—possibly hundreds or even thousands extra—if the transmission gets damaged, repairs will be even more expensive. Safety first; don't risk it to save a few bucks. Remember to maintain it regularly, follow the manual, and ensure the transmission lasts longer.
As a fresh graduate entering the workforce, I recommend saving money on transmission fluid changes by going to external repair shops. Small independent garages or chain brands charge significantly less than dealerships, typically saving you around half the cost. The key is finding a reputable shop that uses major brand fluids like Mobil or Castrol—don't cut corners with shady workshops. Supervise the process to ensure proper fluid replacement procedures, avoiding overfilling or leaks. This approach balances cost savings with safety.
I often work on my own car. The replacement of transmission oil actually depends on the type of oil. For example, AT, CVT, or dual-clutch transmissions have different oil specifications. Using original oil from a 4S store is good but expensive. Buying reliable oil outside and taking it to a professional repair shop can save a lot. If you have the tools, you can do it yourself, but you need to understand the operation process—beginners should not attempt it. Remember, incorrect oil changes may accelerate transmission wear, and regular inspections are more important than saving money.
