How to Change Transmission Fluid

By Mister Transmission

Determining the frequency of transmission fluid and filter changes hinges on many factors

Transmission fluid: it is the lifeblood of your transmission. Without it, your vehicle would cease to run. You need to have the transmission fluid and filter changed at recommended intervals as per your vehicle’s owner’s manual, and a transmission flush ought to be performed at least once every three years.

Transmission fluids serve three purposes: it serves as the hydraulic element within the transmission regulating gear changes, it keeps the transmission clean and lubricated, and it cools the entire transmission system.

There is a lot of friction happening within the transmission. These mechanisms are designed to work with the full capacity of transmission fluid. If the levels drop, that friction is less productive and more damaging. Over time, heat will break the fluid down and be unable to lubricate the system effectively. That puts pressure on the transmission to work harder to pump fluid through the filter.

Checking Your Transmission Fluid Level

If you are experiencing performance issues with your vehicle, you may wish to check your car’s transmission fluid level. But be advised: checking your transmission fluid level can be risky as you need to keep the engine running.

Moreover, in some modern vehicles, it is no longer possible for the average motorist to perform a transmission fluid check. It is advisable to have trained, experienced transmission technician inspect your transmission and the quality of the fluid in it.

Though your vehicle’s owner’s manual will make recommendations as to the required frequency of changing the transmission fluid and filter, you should also weigh the type of driving you do, and the environment where you drive. If you have high mileage on your vehicle, drive in mountainous or hilly terrain, regularly tow a trailer or boat, or if you’re hauling heavy loads, have your transmission inspected annually.

Preventative Maintenance Is Your Best Protection

Although there are no guarantees you can avoid a transmission failure no matter how well you treat your vehicle, you can reduce the risk of a transmission malfunction by ensuring preventative maintenance is performed regularly by a professional.

For more than 50 years, Mister Transmission has kept Canadian motorists on the road by ensuring the transmissions in their vehicles are in tip-top shape. If you have a question about your transmission or want to book a service appointment, contact the Mister Transmission service centre nearest to you.

Want to know more?
Visit one of our locations

image-reviews image-reviews
Customer Reviews
Mister Transmission Barrie exceeded my...
Ted Wilson
Mister Transmission Barrie exceeded my expectations. Al and the service staff were great to work with. My CRV was well taken care of and is now driving better than ever. Thank you!
Date: September 25, 2020
Website: Google
Call Mel for any transmission...
Denise Larre
Call Mel for any transmission work that you need done. Him and his crew will take care of you! Very Professional, called and kept me informed and answered any questions I had! I would go back there and highly recommend it! I can’t thank them enough for getting my precious car running again!
Date: September 24, 2020
Website: Google
Guelph....You are so lucky to...
Darrell Pond
Guelph....You are so lucky to have Cory and his team at Mister Transmission. I wish I could give more stars!!Was having trouble with my Honda CRV that I thought was transmission related. Cory took my car for a drive, experienced what I was talking about and ran a diagnostic on the car. Turns out that it wasn’t the transmission at all, it was the catalytic converter. Cory was forthcoming and said this wasn’t his team’s specialty.He didn’t charge me for the diagnostic and recommended I seek a general repair shop.Cory’s honesty and outstanding business acumen will have me back if and when I have a transmission problem. I will be recommending Cory and his team to everyone I know.
Date: September 24, 2020
Website: Google
I am a petite, doe...
Bethany Corner
I am a petite, doe eyed, 20-something, female and I was amazed by their professionalism and integrity. I had a mechanic from another shop tell me he thought the problem I was having with my car was with my transmission. I took my car to Mister transmission to get a second opinion and they did a free diagnosis and told me my transmission was fine. They didn't make a penny off me, but I know for sure I will recommend them to anyone who asks because of their integrity.
Date: September 24, 2020
Website: Google
I went into Mister Transmission...
Paul Roy
I went into Mister Transmission to have what I thought was a Transmission problem. It wasn't but they found the issue in no time being a transfer case and right front axel. Only the work required was performed. Could't be happier.
Date: September 23, 2020
Website: Google
Very helpful owner and staff....
Dharmesh Patel
Very helpful owner and staff. Also very knowledgeable. Thanks
Date: September 23, 2020
Website: Google
Great place
Dan Savage
Great place
Date: September 23, 2020
Website: Google
Went off-roading and had my...
Mike Uetz
Went off-roading and had my Jeep fall into a giant mud hole that ruined the engine. Decided to take my Jeep to Off-road addiction in St Thomas who were going to do an engine swap. After 2+ months, they weren't able to complete the work nor figure out the issue. They said to take it into a dealership. Dealership quoted me $10k for a new transmission. Was recommended to checkout Mister Transmission and I wish I knew about them sooner.Pete was awesome to work with, he explained everything that was wrong, documented it and took pictures. Previously the engine and transmission weren't seated properly and had cracked the transmission pump. These guys were able to rebuild my transmission, put in a new transmission pump, seat the engine and transmission properly, and have the whole thing running properly with the quoted estimate in both cost and time. I was completely amazed by how quickly they were able to fix my issues.This is the only shop I'll take my Jeep in for any work done in the future. Last year I had my gear and pinion swapped from 3.23 to 4.56, again with flawless work and 0 issues.100/10 recommend you take your vehicle here for any servicing needs. These guys know their stuff and I'm happy to throw money at them any time I need work done.
Date: September 23, 2020
Website: Google
Good service, decent prices.
Jake A
Good service, decent prices.
Date: September 23, 2020
Website: Google
I called Georgio and told...
Megan Wood
I called Georgio and told him that I was having an error message on my transmission. I brought my car to his shop and he diagnosed the problem. He told me that I should take my car to the dealership (Ford) as the issue should be covered under an extended warranty. Luckily, it was covered under warranty. Georgio did not charge me anything for the diagnosis and was very honest, professional, and kind. I would recommend him to anyone! Thanks again Georgio!!
Date: September 22, 2020
Website: Google
Featured Services
Transmission Repair

The evolution of transmissions has made these machines and systems increasingly complex. When transmission repairs are required, determining the cause and cure for what ails can be tricky.

Read More
Transmission Technology

At Mister Transmission we have access to leading-edge diagnostic equipment, enabling us to offer you the fastest and most accurate findings about what’s going on inside your vehicle’s transmission.

Read More
Transmission Maintenance & Service

Just as you have other parts of your car serviced, your transmission needs maintenance to ensure a long life and avoid transmission problems.

Read More
Recent Blogs
4 Things A Transmission Shop Can Do For ...
Transmission shops look after your transmission to ensure it runs as efficiently and
Read More
August 28, 2020
How Can You Tell Transmission Problems A...
The first step in solving any problem is to correctly identify its cause. The same is
Read More
August 21, 2020
What Are The Most Common Transmission Re...
Transmissions are incredibly intricate pieces of machinery. There’s a lot that goes
Read More
August 14, 2020
What Are The Benefits Of Transmission Se...
Just as humans have to see the doctor regularly, automobiles also need regular
Read More
August 7, 2020
Can A Transmission Be Repaired?
Transmission repair is a tricky business. That is because transmissions themselves
Read More
June 17, 2020
How Long Can You Drive With A Bad Transm...
Procrastination: it’s something we’re all guilty of. Why do today what you can
Read More
June 10, 2020
How Do I Know If My Transmission Needs T...
If you can avoid it, you really do not want to replace your transmission.
Read More
June 3, 2020
What Are The Symptoms Of Low Transmissio...
Low transmission fluid can cause multiple issues with your automobile’s
Read More
May 27, 2020
How to Check Transmission Fluid
Regular checking of your transmission fluid is a vital practice to keep up the health
Read More
May 1, 2020
Is Transmission Service Necessary?
When dealing with automotive professionals, regular people sometimes get nervous.
Read More
April 27, 2020