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2018 Outlander Sport CVT Fluid Change Interval & Type

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David L. · rep 0 · May 22, 5:36 AM · 1 replies · solved · Question

Vehicle: 2018 Mitsubishi Outlander Sport ES

Hey everyone,

I've got a 2018 Mitsubishi Outlander Sport ES with about 70,000 miles on it. I'm wondering about the CVT fluid. The owner's manual seems a bit vague on the exact interval for a fluid change, especially for 'normal' driving conditions.

Should I be looking to get this done soon? Also, what specific type of CVT fluid does it take? I'm thinking about attempting this myself, but I want to make sure I have the right fluid and know if there are any special procedures beyond a simple drain and fill. Any advice from those who've done it would be great!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:36 AM

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ClearTheCode admin answer:

  1. CVT Fluid Change Interval: Mitsubishi generally recommends inspecting the CVT fluid every 30,000 miles or 24 months, and replacing it under 'severe driving conditions' (e.g., frequent towing, extensive idling, driving in very hot climates, or mountainous terrain) around 60,000 miles. For normal driving, some sources suggest between 60,000 to 100,000 miles, but it's always best to check your specific owner's manual for the most accurate interval for your 2018 model.

  2. Fluid Type: Your 2018 Outlander Sport with a CVT requires genuine Mitsubishi DiaQueen CVTF-J4 fluid. Using any other type of fluid can lead to premature wear, poor performance, and potential damage to the transmission. This is critical for the longevity and proper operation of your CVT.

  3. DIY Considerations: A CVT fluid change is more involved than a typical engine oil change. It usually involves:

    • Draining the old fluid from the pan.
    • Replacing the CVT filter (if applicable to your model, some only have a screen).
    • Refilling with the exact amount of new DiaQueen CVTF-J4 fluid.
    • Crucially, checking the fluid level at a specific temperature range using a diagnostic tool or following a precise procedure outlined in the service manual. Overfilling or underfilling can cause issues.

  4. When to See a Shop: While a drain and fill can be done by an experienced DIYer, a full 'flush' is generally not recommended for CVTs as it can dislodge debris and cause problems. If you're not comfortable with the precise temperature checks, filter replacement, or ensuring the correct fluid level, it's highly recommended to have a qualified Mitsubishi technician perform this service. They have the specialized tools and knowledge to do it correctly and prevent costly transmission damage.

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