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When to change transmission fluid on my 2017 MKZ Hybrid?

0

Mike T. · rep 0 · May 25, 4:31 AM · 1 replies · solved · Question

Vehicle: 2017 Lincoln MKZ Hybrid Reserve

Hey everyone,

I have a 2017 Lincoln MKZ Hybrid Reserve with about 85,000 miles on it. I've heard conflicting information about transmission fluid changes for hybrids, especially with the eCVT system. Some say it's 'lifetime' fluid, others say it absolutely needs changing.

Lately, I've noticed a very slight hesitation or almost a 'shudder' sometimes when accelerating gently from a stop. It's not consistent, but it's got me thinking about the transmission fluid. Is this something I should be looking into? What's the recommended interval for this specific model and transmission type?

Any advice or experiences with the MKZ Hybrid transmission maintenance would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:31 AM

0

ClearTheCode admin answer:

It's a common misconception that 'lifetime' transmission fluid truly lasts the life of the vehicle without service. While the eCVT (electronically controlled Continuously Variable Transmission) in your 2017 Lincoln MKZ Hybrid is robust, the fluid still degrades over time and mileage due to heat and wear particles.

Here's what you need to know:

  1. Recommended Interval: Ford/Lincoln generally recommends inspecting the transmission fluid every 60,000 miles and changing it at 100,000 miles for normal service, or sooner (around 60,000-75,000 miles) for severe service conditions (heavy towing, frequent stop-and-go traffic, very hot climates). Given your mileage and the slight shudder, a fluid change is a very good idea.
  2. Fluid Type: The MKZ Hybrid's eCVT typically uses Motorcraft Mercon LV Automatic Transmission Fluid. It's crucial to use the correct fluid type as specified in your owner's manual.
  3. Causes of Shudder: A slight shudder can be a symptom of degraded transmission fluid that isn't lubricating or cooling effectively. Other potential causes could include issues with the torque converter, internal clutch packs, or even engine-related problems, but fluid is the most common and easiest to address first.
  4. DIY vs. Shop: A transmission fluid drain and fill can be a DIY project for experienced mechanics, but a full flush is generally best left to a professional shop. A drain and fill only replaces a portion of the fluid, while a flush replaces nearly all of it. For an eCVT, a simple drain and fill is often sufficient and recommended over a pressurized flush.
  5. When to See a Shop: If the shudder persists after a fluid change, or if you notice any warning lights (e.g., 'Service Powertrain Soon'), difficulty shifting, or unusual noises, it's imperative to have a qualified Lincoln technician diagnose the issue immediately. Early intervention can prevent more costly repairs down the line.
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