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2018 XC60 T5 - Transmission Fluid Change Interval? Rough Shifting

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Steve N. · rep 0 · May 22, 5:17 AM · 1 replies · solved · Question

Vehicle: 2018 Volvo XC60 T5 Momentum

Hey everyone,

I've got a 2018 Volvo XC60 T5 Momentum with about 75,000 miles on it. Lately, I've noticed the transmission feels a bit rough, especially during colder starts or when shifting between 2nd and 3rd gear. It's not terrible, but definitely not as smooth as it used to be.

I've heard conflicting things about Volvo's transmission fluid. Some say it's 'lifetime,' but that seems a bit optimistic for a car with this many miles. Is it time to consider a transmission fluid change or flush? What are the recommended intervals for these newer Volvos?

Any advice or experiences with similar issues on your XC60s would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:17 AM

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ClearTheCode admin answer:

It's a common misconception that 'lifetime' transmission fluid truly lasts the life of the vehicle without maintenance. While Volvo may not specify a strict replacement interval for normal driving conditions, many independent mechanics and experienced owners recommend a transmission fluid drain and fill (not a flush, which can sometimes dislodge debris) every 60,000 to 80,000 miles, especially if you experience symptoms like rough shifting, delayed engagement, or if you do a lot of stop-and-go driving or towing.

Here's what to consider:

  1. Symptoms: Rough shifting, hesitation, or unusual noises from the transmission are all indicators that the fluid might be degraded or low.
  2. Fluid Check: While not always easy on modern sealed transmissions, a qualified technician can check the fluid level and condition. Dark, burnt-smelling fluid is a clear sign it needs replacement.
  3. Procedure: A drain and fill replaces a portion of the old fluid with new. Multiple drain and fills over a short period can replace more of the fluid without the risks associated with a pressurized flush.
  4. Causes: Over time, transmission fluid breaks down due to heat and friction, losing its lubricating and cooling properties. This can lead to increased wear on internal components.

When to see a shop:

If the rough shifting is severe, accompanied by warning lights on the dashboard (e.g., a 'Transmission Service Required' message), or if you notice any leaks, it's crucial to have a professional Volvo specialist diagnose the issue immediately. An OBD-II scan might reveal codes like P0700 (Transmission Control System Malfunction) or specific gear ratio errors, indicating a more serious problem than just old fluid. Ignoring these signs can lead to costly transmission repairs.

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