Prius in for an oil change

Discussion in 'Gen 4 Prius Main Forum' started by TinyTim, Jun 26, 2026 at 4:27 PM.

  1. TinyTim

    TinyTim Active Member

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    Just shy of 54K miles. The technical service advisor tried to start me off with changing the brake fluid. I said it doesn't need it. He then said changing the transmission fluid is coming up. All this after seeing my $45.95 oil change, tire rotation and fluid top up.

    Thoughts?
     
  2. notspam3

    notspam3 Member

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    It's a question of time AND/OR mileage. If the brake fluid is dark instead of clear you might want to change it. Use the Toyota recommended fluid change schedule if you want to be sure.

    If your car is a 2017 and all original then you may want to do the tranny, coolant and brake fluids after 9 years of service. Fluids are cheaper than replacing cars.
     
  3. TinyTim

    TinyTim Active Member

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    If I were a life insurance salesman. You would be my target customer of a term life insurance policy.

    Japanese made/built./assembled cars in Japan are the most reliable cars in the world if they have the Toyota badge. The Prius is made in Japan. My car didn't even have the oil change before the service rep started talking about more services.
     
  4. JC91006

    JC91006 Senior Member

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    Your service adviser is a sales person, commission
     
  5. frodoz737

    frodoz737 Top Wrench

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    Be advised. Prius owners used to think it was OK to go 10K miles before oil/filter change and that trans and brake fluid was lifetime...they were wrong. Yes...SAs are salesmen, but you still need to service your vehicle.
     
  6. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Brake fluid naturally absorbs moisture from the atmosphere. The reservoir is closed, but it isn't a total seal.

    Once brake fluid has been contaminated with a lot of water, there is a real risk of steam flashover causing a locked caliper. That is an extreme scenario- it is very, very rare in the wild, but it can happen.

    With a Prius, there is an additional concern where the master cylinder is much more sophisticated than that of a non-hybrid car, much more expensive to replace and generally more sensitive to contamination.

    I'm not here to sell you a brake fluid change, but I do think it is worth inspecting the fluid for color and if you have doubts you can use a conductivity tester to measure the water content and make an informed decision on whether replacement is needed.

    Transmission fluid replacement is a different story, it really isn't necessary in these cars.
     
  7. TinyTim

    TinyTim Active Member

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    I am not against servicing my Prius. I just do not think there is anything major that needs to be addressed until the car hits 100K miles. If someone has a Prius that they store for 10 years. Does it need all the service a Prius with 100K miles has because of time or is it mileage? Tires need to be replaced after probably 8 years regardless of mileage.

    I have brand new cabin air filter and engine air filter. I have a brand new 12V battery. I have brand new tires. My Prius gets serviced, mostly by me.

    Obviously I know they are on commission.