Why Is It Necessary To Change Your Transmission Fluid?

March 10, 2021 | By Mister Transmission

Why Is It Necessary To Change Your Transmission Fluid?

Do you really have to change your transmission fluid or is it just one of those things that you’re supposed to do. We hate to tell you, but, yes, you do have to change your transmission fluid at some point to ensure a properly functioning transmission.

What Is Transmission Fluid?

Your transmission fluid is the lifeblood of your transmission. Most Canadians drive automatic transmission vehicles, which require automatic transmission fluid to lubricate the components within the transmission and it also acts as a coolant. Continuously variable transmissions (CVTs) also use transmission fluid. Manual transmissions vary. Some use transmission fluid, some use something called transmission oil, and some use standard motor oil. Automatic transmission fluid is optimized for automatic transmissions, but all these fluids provide lubrication.

What Problems Might You See With Your Transmission Fluid?

Checking your transmission fluid every month gives you the best chance of catching small problems before they grow big. But what are you checking for? First, check your fluid levels. If your fluid isn’t at the line, top it up. If you have to top it up every month, you probably have a leak, and your transmission needs to be resealed. But also check the quality for your transmission fluid. It should be mostly clear with a reddish hue (or in some rare cases, greenish). If your fluid is opaque or if it smells bad, then this is indicative of a larger problem. Apart from whatever other repair is necessary, your transmission fluid will need to be changed.

Do You Only Need To Change Your Transmission Fluid When There Are Problems?

If your transmission overheats, it can burn your transmission fluid. Burnt transmission fluid needs to be changed. To check your transmission, a tech might perform a pan examination, in which they will check your fluid for particulate matter. Some material in your fluid is normal, but there shouldn’t be a lot of it. Friction surfaces often wear down and, if left alone for too long, they’ll contaminate your fluid to levels that are too high. Then your fluid will have to be changed.

All these issues that require transmission fluid changes start somewhere else. But do you need to change your transmission fluid just as a precaution? Some manufacturers offer “fill-for-life” fluids and some transmissions are designed to be complete systems in which nothing goes in or out. But claiming something doesn’t make it true. No matter what kind of automatic transmission you drive, what kind of fluid you use, or where you drive, the Automatic Transmission Rebuilders Association recommends a transmission fluid change every 50,000 kms, or every two years.

Mister Transmission

To learn more about transmission fluid changes, please contact us.

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Customer Reviews
glad we stopped in to...
Marcel Boisvert
glad we stopped in to get a second opinion you were very helpful
Date: June 13, 2025
Website: Google
Had a problem with my...
Steve Hart
Had a problem with my transmission on my 2014 Ford focus. Took it to mister transmission did I ever pick the right place. From Brian on down a very professional operation. They kept me updated from the start to the finish. There were no surprises at all everything was done as stated and was kept up to date on the price and what needed to be done. Would highly recommend using these guys for any transmission issues.
Date: June 13, 2025
Website: Google
Came in after shifting in...
Austin Hawkins
Came in after shifting in our transmission seemed off. Gary the manager did an amazing job all the way from diagnosis to hand-off. He was knowledgeable and finished a complex job quickly and with expertise. Our destroyed transmission is now shifting better than ever.
Date: June 13, 2025
Website: Google
I was awfully disappointed to...
Todd Button
I was awfully disappointed to find out my car needed a new transmission after only 155,000 km from my local mechanic. I was in shock when initially quoted $6500 for a new transmission. I did not waste any time picking up the phone and shopped around only to find out that most, if not all, auto repair shops send the cars out to Mr Transmission when transmission work is required. Cut the middle man out and saved huge !I cannot say enough about the professionalism and superior customer service from Ken and Chris. They kept me up to date every step of the way when they had difficulty sourcing parts from different provinces and states and were very apologetic for things beyond their control. They went above and beyond with a personal loaner car due to the delays until I was able to get my car back. Great father and son team running this shop and I would not hesitate to recommend them to any poor soul who needs a transmission.
Date: June 13, 2025
Website: Google
Family owned, honest, professional and...
Tim Mullen
Family owned, honest, professional and community minded. What else is there to say about Christina and Chris except if you have a transmission problem or think you might, go see them and get it fixed or diagnosed properly. They have helped our familiy out over the years and if anyone asks, I'm sure to send them there. Our experience is that they are very consultive about the solution and work within your budget depending on what your vehicle needs.Thanks again for the great work.
Date: June 13, 2025
Website: Google
I have a 2018 Ford...
Rob Mackay
I have a 2018 Ford Ranger that had a transmission problem. My mechanic made several attempts to fix it and finally told me that he could send it our to a transmission specialitst and it would be approx $2,000. I took it to Gary and he fixed it the next day for much less. It is running beautifully!
Date: June 13, 2025
Website: Google
Very nice friendly people and...
Raj Jammu
Very nice friendly people and I did take my car videw time .. they help you out !! Quickly... best transmission in pickering
Date: June 12, 2025
Website: Google
Sanjay rescued me from the...
James Barber
Sanjay rescued me from the side of the road, and helped get my broken down truck to his shop. He was kind, honest, and we had a great conversation while they diagnosed my vehicle. I would recommend anyone with transmission concerns to contact mr transmission London. You can expect honesty and professional consultation .James
Date: June 12, 2025
Website: Google
Honest, reliable and informative service...
Lynnea Luck
Honest, reliable and informative service and help 👍 definitely recommend 5/5
Date: June 12, 2025
Website: Google
Brought in my 2015 f150...
Shawn Brooks
Brought in my 2015 f150 transmission problems. I honestly thought it would cost me thousands but to my surprise it did not. Very fair prices and go figure a honest mechanic. Let me know what it would need the cost and gotter done. No issues and it's been 3 weeks runs like new. Highly recommend this company. Did a great job and reasonably priced.
Date: June 10, 2025
Website: Google
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