What’s Involved in a Transmission Service?

By Mister Transmission

Mister Transmission offers various types of transmission servicing, depending on your car’s needs. Here we explain the 5 most common transmission services.

A transmission service is part of your routine maintenance, just like replacing your engine oil. Here we’ve laid out the different types of transmission services we offer at Mister Transmission, including why they are important and what each service includes.

Automatic Transmission Fluid Exchange:

Transmission gears deliver power from the engine to the drive wheels, shifting automatically to provide the best power and efficiency for your driving speed. A special transmission fluid cools and lubricates the gears. Over time, this fluid degrades, and its lubricant qualities diminish. Changing the fluid at the correct intervals can help prevent premature wear and damage to the transmission.

This service includes;

Removal of the old transmission fluid and replacing it with new, clean fluid of the grade recommended by your vehicle manufacturer.

Automatic Transmission Drain and Fill:

Automatic transmission fluid lubricates, cools and cleans internal components of the transmission. It also helps to maintain the hydraulic pressure necessary for the transmission to function. The additives in the transmission fluid can be depleted over time.

This service includes;

  • removing the transmission fill/drain plug to remove the old automatic transmission fluid
  • reinstalling transmission fill/drain plug
  • refilling the transmission with new automatic transmission fluid to the proper level

Automatic Transmission Filter Replacement:

The automatic transmission filter helps remove dirt and contaminants from the automatic transmission fluid.

This service includes;

  • removing the transmission pan
  • removing the old transmission filter and replacing it with a new transmission filter
  • removing the old gasket material
  • replacing the pan gasket with a new gasket and reinstalling the pan
  • refilling the transmission with new automatic transmission fluid to the proper level

Automatic Transmission Fluid Exchange & Filter Replacement:

Automatic transmission fluid lubricates, cools and cleans internal components of the transmission. It also helps to maintain the hydraulic pressure necessary for the transmission to function. The additives in the transmission fluid can be depleted over time.

This service includes;

  • changing the fluid in the transmission system, including the torque converter and transmission cooler
  • removing the transmission pan
  • removing the old transmission filter and replacing it with a new transmission filter
  • removing the old gasket material
  • replacing the pan gasket with a new gasket and reinstalling the pan
  • refilling the transmission with new automatic transmission fluid to the proper level

Manual Transmission Service:

Manual transmission fluid provides lubrication to gears, bearings, shafts, and other internal components. Heat, pressure and friction can slowly breakdown the additives in the manual transmission fluid. In addition, small particles of metal may come off the gears as they wear and these metal particles can mix with the fluid. Fluids can also become contaminated with water.

This service includes;

  • draining or evacuating the old manual transmission fluid
  • filling the manual transmission fluid with the manufacturer’s recommended type and quantity of new fluid

The net result of all these services is to provide better lubrication, improve the holding ability of the friction components, and reduce heat. This means your transmission works better, longer. Therefor you are less likely to face a major transmission repair.
Mister Transmission offers all of these services, and will be happy to explain the details to you.

A complete transmission service should include:

  • removing and examining the sump or pan (where possible)
  • replacing or cleaning the screen or filter
  • cleaning the pan
  • reinstalling the pan with a new pan gasket

Want to know more?
Visite one of our locations!

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Customer Reviews
Great reliable friendly service
Joe Macdonald
Great reliable friendly service
Date: July 7, 2025
Website: Google
Thses guys are pros after...
Nathan Chartrand
Thses guys are pros after dealing with another transmission shop not checking endplay in the crankshaft my engine is destroyed a standard practice any reputable shop should be doing
Date: July 6, 2025
Website: Google
Hi I had my 1966...
Craig
Hi I had my 1966 Chevelle Malibu SS in at Mister Transmission Sarnia to have the transmission worked on last year. Mike in the back shop worked on my car (pride and joy). He did the repairs that was needed done and a few extra things done without request. The car ran like a dream when I got it back. The cost was lower then they said it would be. I'm very fussy on who works on my car. The owner (manager) was awesome to deal with. Then this week 04 July 2025 I needed a shift cable repaired as I was headed out with my car . I went to the shop and they were over loaded with work. Mike made time to get my car fixed so I could use it on the weekend. They went the extra mile to get my car fixed and again I could not complain about the cost to repair the cable. I fully recommend them and the people that work there are outstanding. A special thanks to Mike who worked on my baby(my car) thanks so much guys. They are my go to shop with my Classic car and all my vehicles.
Date: July 5, 2025
Website: Google
Hi I had my 1966...
Craig
Hi I had my 1966 Chevelle Malibu SS in at Mister Transmission Sarnia to have the transmission worked on last year. Mike in the back shop worked on my car (pride and joy). He did the repairs that was needed done and a few extra things done without request. The car ran like a dream when I got it back. The cost was lower then they said it would be. I'm very fussy on who works on my car. The owner (manager) was awesome to deal with. Then this week 04 July 2025 I needed a shift cable repaired as I was headed out with my car . I went to the shop and they were over loaded with work. Mike made time to get my car fixed so I could use it on the weekend. They went the extra mile to get my car fixed and again I could not complain about the cost to repair the cable. I fully recommend them and the people that work there are outstanding. A special thanks to Mike who worked on my baby(my car) thanks so much guys. They are my go to shop with my Classic car and all my vehicles.
Date: July 5, 2025
Website: Google
I had a fantastic experience...
Xavier Montenegro
I had a fantastic experience with the whole Mr. Transmission team. Jordan and Jason are fantastic at their jobs, and they are truly willing to be honest and completely transparent with you. I took my 2018 Sierra to them for some transmission work (shocker), and they were quick, and the transmission now works fantastically. There were some small hiccups, the transmission initially acted a little weird, but they were quick to correct that. I had my spark plugs and a few coils swapped over here. One of the coils they got from GM blew up and took a couple of fuses with it. They comped the tow and had it fixed quickly, and were incredibly apologetic about the whole thing. Overall, if you are looking for quality service from a tried and true team, this is the place you want to go.
Date: July 5, 2025
Website: Google
Excellent service, and fantastic staff....
KoiLady
Excellent service, and fantastic staff. We’re from BC and travel full-time. Our GMC diesel truck needed a ATF and filter change, and these awesome guys got us in next day. The cost was what they quoted, and we waited while they did the work. We’d absolutely go there again, and recommend them to others.
Date: July 3, 2025
Website: Google
These guys do good work....
Hunter Frederick
These guys do good work. And a fair price. 👍👍
Date: July 3, 2025
Website: Google
Mandy was extremely helpful in...
Don Brindle
Mandy was extremely helpful in getting out 2009 VW beetle back on the road, we are from out of town and he was very compassionate to our situation and helped at every level, if you are in Cambridge and need help, Mandy is your man!
Date: July 3, 2025
Website: Google
Excellent service, and fantastic staff....
KoiLady
Excellent service, and fantastic staff. We’re from BC and travel full-time. Our GMC diesel truck needed a ATF and filter change, and these awesome guys got us in next day. The cost was what they quoted, and we waited while they did the work. We’d absolutely go there again, and recommend them to others.
Date: July 3, 2025
Website: Google
Amazing customer service from Dan...
Justine Butka
Amazing customer service from Dan and the crew. Took my 2018 Tuscon there with acceleration problems and Dan took the time to investigate and solve the issues even without my vehicle showing any codes. I had previously had 4 visits to other shops without any results to solve this issue and was told because there was no engine code they couldn’t do anything. But, Dan was able to diagnose and solve the problem and in 2 days had my car back on the road. It was a clogged catalytic converter. Thank you for your professionalism and experience.
Date: July 1, 2025
Website: Google
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