Do I Need a Transmission Cooler?

Transmission coolers help to protect your transmission when you turn up the heat.

Transmission Coolers help transmissions deal with the added stress and heat caused by towing boats, trailers and other heavy objects.

Each year, hundreds of thousands of automatic transmissions fail and the majority of them are due to overheating of the fluid.  Most of this overheating is due to today’s vehicles being engineered with downsized engines and transmissions in an effort to maximize fuel economy.  We demand the same or better performance from these smaller, more efficient powertrains, therefore they must work harder than ever before.

For the same reason, the addition of an auxiliary transmission fluid cooler isn’t just necessary for those who tow trailers anymore.  Many manufacturers are now also recommending the addition of a transmission cooler if you carry extra passengers or cargo (ie – vacation, car-pool), drive in stop-and-go traffic, drive in hot or very cold weather, or climb steep inclines.  This would likely be 90% of your customers, just as the above statistic would indicate.

Due to the extra strain placed on today’s vehicles, automatic transmissions require a lot from a transmission fluid.  The fluid must lubricate the moving parts, clean the interior surfaces, protect against corrosion, transmit energy, and most of all, cool the transmission.

When an automatic transmission’s temperature exceeds 200F, the transmission fluid is pushed to its limits. Overheated transmission fluid will break down causing seals to crack, moving parts to clash, and leaks to occur.  At Mister Transmission, we offer our own brand of high-quality transmission fluid coolers (also available at Canadian Tire) and the expertise to install them properly.

Mister Transmission’s aluminum-construction, transmission fluid coolers are among the best in the business.  Our coolers offer maximum heat dissipation by constantly swirling and agitating the fluid as it flows through, and with the addition of our thermostatic flow control we ensure that your customer’s transmission maintains the ideal temperature for shiftability and long-life.

There are many areas under the hood of a modern automobile where you could install a transmission cooler, but there’s really only one location where you will get the full 100% cooling efficiency.  You want to install the transmission fluid cooler in front of all other heat exchangers (ie – radiator, a/c condenser, etc) and in an area with good incoming airflow.

For every 20F degree drop in transmission fluid temperature, you can expect to extend the fluid and equipment life, thereby extending the life of the vehicle.  That’s why it is very important to have a quality transmission cooler, and more importantly, to have it professionally installed.

Mister Transmission recommends offering transmission fluid coolers to all of your customers since this would not only decrease the likelihood that they may suffer a premature transmission failure, benefiting both your customers and your business.  To ensure proper application and function of your customer’s transmission fluid cooler, we recommend you allow the experts at Mister Transmission to install it for you.

If you are interested in having a transmission cooler installed in your vehicle, please contact your local Mister Transmission and book an appointment for our FREE 21-Point Multi-Check Inspection.

Want to know more?
Visit one of our locations

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.

image-reviews image-reviews
Customer Reviews
First meet Steve thru Marks...
Sean Byrne
First meet Steve thru Marks transmissionShop,,Had my F150 routine service ,,Steve and the guys and gals there r Honest and true to there word, and don't push unneeded work to b done , Thx to all there ,, ps Happy Retirement to Cambell
Date: August 10, 2026
Website: Google
Brought in my 2014 F-150...
Colin
Brought in my 2014 F-150 with a transmission concern. Kris and the team were upfront about what was needed and what wasn't, and completed the repair cleanly and professionally. After 30+ days of varied driving including cold starts and extended sits, pulling trailer, city driving, the truck is shifting perfectly. Honest shop, fair price, no unnecessary upsells. Highly recommend Kris and the team at Mister Transmission. There is a reason this shop is so busy!
Date: August 10, 2026
Website: Google
We broke down in the...
Nikki Maronese
We broke down in the Sault as we were traveling through -We were stranded! Mr. Transmission moved some things around to get us in. He ended up staying late on a Friday and coming in on a saturday so we would be able to head home. Great service, excellent communication and overall great place.
Date: August 10, 2026
Website: Google
Best experience I've had in...
Mags B
Best experience I've had in a shop in a long time, they were incredibly nice, explained to me the problem (worn cable, something was seized), and had my car in and out in a half hour. Absolutely incredible service, I will be telling anyone and everyone who needs transmission work to go to this Mr Transmission.
Date: August 10, 2026
Website: Google
3 tries to get an...
Catee “Catee
3 tries to get an appointment (Automated booking cannot be trusted, the next booking was rescheduled due to parts not in on time). I went to my dealership for another matter and asked about parts for MrT. They arrived the week before but nothing was ordered specifically for me. When I called MrT, Sara said she meant to call last week but got busy. She didn’t call me the next business day either so I recommend you call them to keep on top of things:) Other than that, service was good, fluid and filter changed, pan inspected. I dropped off my vehicle night before and it was ready after lunch the next day.
Date: August 10, 2026
Website: Google
Excellent service, provided updates and...
Luke Hanneman
Excellent service, provided updates and were very straightforward, would go back.
Date: August 10, 2026
Website: Google
Mr T is great, Ken...
Travis Mercer
Mr T is great, Ken is a solid person to take your car to, Chris is good as well.
Date: August 9, 2026
Website: Google
I was recently camping north...
Mike Leo
I was recently camping north of the soo when my truck broke down ( tranny trouble ) before the truck was towed i phoned mr T and told them my problem - they said bring it in early next morn and we'll look at it - tow dropped truck off and they took it right away - couple hours later i was on my way back to my site - thanks to the Devons for all your help - great service and shop
Date: August 8, 2026
Website: Google
⭐⭐⭐⭐⭐ Huge thank you to...
Michael Frankovich
⭐⭐⭐⭐⭐ Huge thank you to Aki and the entire team at Mister Transmission! We brought our truck in with transmission issues, and these guys did an absolutely amazing job. Aki was professional, knowledgeable, straightforward, and kept everything clear throughout the process. The transmission was repaired properly, and the quality of their work exceeded our expectations. Team of this place is so professional guys ! It’s not easy to find a shop you can truly trust, especially when it comes to major transmission work, but Aki and his team definitely earned our trust. Highly recommended from the entire Smart Roads team. Thank you again, guys — excellent work!
Date: August 7, 2026
Website: Google
Theses guys are awesome, I...
VeganSupply
Theses guys are awesome, I came in with my RHD car, even though it was outside their specialty they were completely honest and extremely helpful getting me to the next step after they found my issue. Owner stayed late to make sure my car was safely stored and looked at the very next morning to help me get on my way. Highly recommend this company, honestly and extra care go along way and tons of respect for these wonderful folks here!
Date: August 7, 2026
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
Mister Transmission Blogs
Recent Blogs
Common Transmission Repair Issues And Ho...
The most common transmission repair issues are slipping gears, faulty solenoids,
Read More
August 7, 2026
Transmission Service Vs Repair: Key Diff...
Transmission service is routine maintenance that keeps a healthy transmission running
Read More
July 31, 2026
Transmission Oil Change: How It Helps Im...
A transmission oil change, which is another name for a transmission fluid change,
Read More
July 23, 2026
Transmission Fluid Change: Signs Your Ve...
Your vehicle needs a transmission fluid change right away if the fluid is dark or
Read More
July 15, 2026
Transmission Rebuild Explained: When It ...
A transmission rebuild means taking your transmission apart, replacing the worn or
Read More
July 7, 2026
Transmission Service Guide: Why Regular ...
Regular transmission service, mainly fluid checks and changes plus periodic
Read More
June 29, 2026
Transmission Replacement: How To Know Wh...
You likely need a transmission replacement when the unit has failed internally and
Read More
June 22, 2026
How Transmission Repair Works And When Y...
Transmission repair fixes a specific failed part inside the transmission, like a
Read More
June 15, 2026
Transmission Problems You Should Never I...
The transmission problems you should never ignore are slipping gears, delayed or hard
Read More
June 8, 2026
Transmission Fluid Flush VS Change: Whic...
Transmission fluid service is one of those maintenance items that most vehicle owners
Read More
May 29, 2026