What Causes Transmission Fluid to Burn or Leak?

February 16, 2026 | By Mister Transmission

Common Causes of Burnt Transmission Fluid

Burnt transmission fluid usually indicates excessive heat or friction inside the system. Common causes include:

  • Low or contaminated transmission fluid
  • Heavy towing, stop-and-go driving, or frequent high temperatures
  • Worn clutches or internal components
  • Delayed or skipped transmission maintenance

When fluid burns, it loses its ability to lubricate and cool, increasing the risk of internal damage.

Why Transmission Fluid Leaks Occur

Fluid leaks are often caused by aging or damaged components, such as:

  • Worn seals and gaskets
  • Loose or damaged transmission pans
  • Cracked fluid lines or torque converter seals
  • Improper previous transmission service

Even small leaks can quickly lead to low fluid levels, overheating, and performance issues.

Why Timely Transmission Service Matters

Routine transmission service helps identify leaks and fluid degradation before they escalate. Regular transmission maintenance includes fluid inspections, seal checks, and early detection of wear—preventing costly repairs.

Ignoring fluid issues can result in slipping, delayed shifting, or complete transmission failure.

When to Schedule Transmission Maintenance

Contact Mister Transmission London Dundas Street immediately if you notice:

  • Burning smells
  • Red or dark fluid under your vehicle
  • Difficulty shifting gears
  • Warning lights on your dashboard

Contact Mister Transmission London Dundas Street

Burnt or leaking fluid is a clear sign that transmission service is overdue. With professional transmission maintenance from Mister Transmission London Dundas Street, you can protect your vehicle, prevent breakdowns, and extend transmission life with confidence.

Mister Transmission Team

The Mister Transmission team consists of certified transmission specialists with decades of combined experience in diagnosing, repairing, and maintaining automatic and manual transmissions.

With over 60 years of service across Canada, our experts provide trusted, accurate, and up-to-date automotive advice to help drivers make informed decisions about their vehicles.

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Customer Reviews
Super impressed with the service...
Bobby Newton
Super impressed with the service provided by Peter. After going to a smaller transmission shop twice and never really addressing all of my vehicle issues. I decided to go to a larger chain. Peter seemed like he knew what he was doing from the get go. Truck is now running smooth. Definitely under promise over delivery. Highly recommend Peter
Date: April 16, 2026
Website: Google
Spencer was nice and looked...
Jarrett Hoben
Spencer was nice and looked at my car for free , told me my transmission wasn’t the problem very honest place
Date: February 3, 2026
Website: Google
I had an excellent experience...
Kenia (Ken)
I had an excellent experience with Mister Transmission and would absolutely recommend them. I originally took my car to a general mechanic who couldn’t find the issue and referred me to another transmission shop. That shop told me I would need a new transmission, with an estimated cost of $7,000–$9,000. After reading the great reviews, I decided to take my car here for a third opinion and to see if they could get me in sooner and am I ever glad I did! They quickly told me it didn’t seem like a transmission issue and offered to take a deeper look if I brought the car back as I had just quickly dropped in. When I did, they properly diagnosed the actual problem. It was such a relief to find out it wasn’t a transmission issue. Even though the repair wasn’t transmission-related, they were more than willing to fix it and were very upfront about my options. Peter, the owner, was incredibly kind and took the time to explain exactly what was wrong and how everything was connected. The service was honest, transparent, and completely stress-free. I’ll definitely be back and would trust them again without hesitation.
Date: December 16, 2025
Website: Google
I was there for a...
Peter Resko
I was there for a transmission service and I was very delighted with them. Professional people with knowledge.
Date: November 24, 2025
Website: Google
I brought my Nissan NV200...
Thames Valley
I brought my Nissan NV200 work van in, because I was having acceleration/power issues and what I thought was transmission issues. The owner Peter immediately recognized that I didn’t actually have transmission issues, it was in fact, a clogged catalytic converter rather than an CVT transmission issue. He then recommended me to the appropriate specialist that had me up and running again within an hour I was back to work! Super happy with the honest service and expertise.
Date: October 24, 2025
Website: Google
Good service and listens to...
Johnny1Leg
Good service and listens to the customer issues of their vehicle.
Date: September 4, 2025
Website: Google
Good service and listens to...
Johnny1Leg
Good service and listens to the customer issues of their vehicle.
Date: September 4, 2025
Website: Google
They listened to my concerns...
Scott Lupa
They listened to my concerns and preformed what I asked them to do. I was in and out in a few hours. Thank you. I would recommend them to anyone that needs transmission work.
Date: August 13, 2025
Website: Google
Brought my 2018 VW Passat...
GT
Brought my 2018 VW Passat in thinking I definitely had a transmission issue only to find out that it was something else. Spencer was excellent in explaining what was wrong with my car and couldn't be more friendly and offered to recommend places for the work to be done. I came away from Mr Transmission very impressed and would not hesitate to recommend them or bring my vehicle back again.
Date: July 17, 2025
Website: Google
Brought my 2018 VW Passat...
GT
Brought my 2018 VW Passat in thinking I definitely had a transmission issue only to find out that it was something else. Spencer was excellent in explaining what was wrong with my car and couldn't be more friendly and offered to recommend places for the work to be done. I came away from Mr Transmission very impressed and would not hesitate to recommend them or bring my vehicle back again.
Date: July 17, 2025
Website: Google
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