Introduction
As vehicles accumulate mileage, dealerships may begin recommending transmission fluid flush services. Drivers with vehicles approaching or exceeding 100,000 miles often wonder whether the service is necessary.
Transmission maintenance recommendations can vary depending on the vehicle and driving conditions.
What Transmission Fluid Does
Transmission fluid lubricates internal transmission components and helps maintain proper shifting performance.
The fluid also helps:
• reduce heat
• protect gears and seals
• maintain hydraulic pressure
Over time, transmission fluid can degrade from heat and wear.
Why Dealerships Recommend Transmission Flushes
Dealerships may recommend transmission service to:
• remove old fluid
• improve shifting performance
• reduce internal wear
• extend transmission lifespan
Some manufacturers include transmission service intervals in the maintenance schedule.
When Service May Be Appropriate
Transmission fluid service may be appropriate if:
• the manufacturer recommends it
• shifting becomes rough or delayed
• the fluid appears dark or contaminated
However, service recommendations may vary depending on transmission type and maintenance history.
The Bottom Line
Transmission fluid maintenance can help support long-term transmission performance. Drivers should review manufacturer service recommendations and discuss the condition of the fluid before deciding on the service.
Internal Links
You may also want to read about coolant flush services and dealership maintenance recommendations, since fluid services are often discussed together during inspections.
About the Author
Dealer Truth articles are written by an automotive industry observer focused on helping drivers understand dealership service recommendations and maintenance practices.
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