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2018 Acura TLX V6 - When to change transmission fluid? Feeling some shuddering.

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Christine P. · rep 0 · May 22, 4:58 AM · 1 replies · solved · Question

Vehicle: 2018 Acura TLX V6

Hey everyone,

I've got a 2018 Acura TLX V6 with about 75,000 miles on it. I've been noticing a slight shudder, especially when accelerating from a stop or at lower speeds. It's not constant, but definitely noticeable.

I'm wondering if it's time for a transmission fluid change. I haven't had it done yet, and I know Acura has specific fluid requirements. Is this a DIY job, or should I take it to a professional? What's the recommended interval for the 9-speed automatic in these cars?

Any advice or experiences with this would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:58 AM

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ClearTheCode admin answer:

It sounds like your 2018 Acura TLX V6 is exhibiting classic symptoms that could point to old or degraded transmission fluid. Acura's 9-speed automatic transmissions are sensitive to fluid quality, and regular maintenance is crucial.

  1. Recommended Interval: For your 2018 TLX, Acura generally recommends checking the transmission fluid at 15,000 miles or 12 months, and then replacing it every 30,000 miles or 24 months under normal driving conditions. However, if you do a lot of stop-and-go driving, towing, or driving in extreme temperatures, more frequent changes might be necessary. Given your 75,000 miles and no prior change, it's definitely overdue.

  2. Causes of Shuddering:

    • Degraded Fluid: Over time, transmission fluid breaks down, losing its lubricating and cooling properties. This can lead to increased friction and shuddering as the transmission tries to shift.
    • Contamination: Metal particles and clutch material can accumulate in the fluid, further reducing its effectiveness.
    • Filter Clog (less common for fluid change): While less likely to be the primary cause of shuddering from old fluid, a clogged transmission filter can restrict fluid flow.

  3. DIY vs. Professional: A transmission fluid drain and fill (not a flush, which can sometimes cause more issues if not done correctly) is a moderately difficult DIY task. It requires specific Acura DW-1 transmission fluid, proper lifting equipment, and careful attention to torque specs for the drain and fill plugs. Many owners opt for a professional service due to the precision required and the cost of potential mistakes. If you're not comfortable, a certified Acura technician is recommended.

  4. When to See a Shop:

    • If the shuddering is severe or accompanied by grinding noises, difficulty shifting, or a 'D' light flashing on the dash (indicating a transmission fault code), take it to a shop immediately.
    • If you're unsure about performing the DIY, a professional can ensure the correct fluid is used and the job is done properly.
    • If a fluid change doesn't resolve the issue, further diagnostics by a professional will be needed to rule out internal transmission component wear or sensor issues.
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