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.

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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Worked with Mister Transmision for...
Darren Keeping
Worked with Mister Transmision for Warranty Claims they have resonable prices and great service .We recomend them in St Catherines.
Date: November 5, 2026
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Darren Keeping
Great Shop to work with for Warranty Claims. They are Resonable priced and Good at what they do.
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Brought my car in because I thought I needed a new transmission. Giorgio helped diagnose the actual problem and did not charge anything. I drove out of my way to go to this Mr Transmission because I had a positive referral. I was happy that I went to him because he provided helpful and honest service.
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Maureen Axton
Had my Dodge Avenger brought in to this location to have my transmission looked at for a leak. Cecil and staff were super professional. My vehicle was done quicker than expect and no more LEAKS! Big shout out to Mister Transmission Burnaby
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Bhupinder Dhami
Best place everyone one so helpful. Will recommend for anyone who is having transmission problems. Very clean shop
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Andrew Esser
Wonderful guy on the front desk. Super personable, knowledgeable and easy to talk to. Explained to me in detail what the issues were and the cost associated with it. They fixed me up in a reasonable amount of time for a price I thought was more than fair. These guys have a 5 star review for a reason.
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Great shop. Great customer service....
Jake Sutherland
Great shop. Great customer service. Will be returning.
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I had my daughter's honda...
Neena Parmar
I had my daughter's honda crv serviced this week. The staff was very helpful in explaining the work needed and the cost involved upfront. Very happy with the service.
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Great and honest experience! Worried...
Nate
Great and honest experience! Worried something was wrong with my trans and they test drived it and found nothing. Love the honesty!
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David Dickson
They rebuilt the T56 magnum on my c6. only shop outside of Vancouver with the knowledge to do so. Did an amazing job nothing but good things to say about Jamie and his team. 5 stars isn't enough . Cheers boys, thanks again. Would highly recommend 👌
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