Everything You Need to Know About Transmission Fluid Changes

October 29, 2018 | By Mister Transmission

Everything You Need to Know About Transmission Fluid Changes

Transmission fluid is (almost literally) the lifeblood of the transmission. An automatic transmission simply won’t work without transmission fluid. Now, you would have to have a very large leak to have absolutely no fluid in your transmission. However, you still need to have the right level and the right quality of transmission fluid or else you’re inviting transmission problems to happen. To have your transmission in perfect working order, you might require a transmission fluid change.

Transmission Fluid

Transmission fluid works as a lubricant and it is optimized for the functions of the transmission. These functions include valve operation, brake band friction, and the torque converter. Transmission fluid is required in all automatic transmissions. Some manual transmissions also use transmission fluid, but some use engine oil or gear oil.

Transmission Fluid Problems

Not all transmissions are the same; not even all automatic transmissions. But all transmissions experience wear and tear that can cause debris to collect in the fluid. Furthermore, there can be problems within transmissions that cause the fluid to be damaged or degraded, and this in turn can cause further problems.

And then there are leaks. Any transmission can fall foul of a leak. The key sign of a leak is a patch of reddish liquid that has collected underneath your vehicle as it is parked. Leaks have to be patched and the lost fluid needs to be topped up.

Symptoms of using Poor Quality Transmission Fluid

If the fluid in your transmission is lacking in either quantity or quality, you will begin to notice symptoms in how your transmission operates. You may experience a temporary delay while shifting gears. Your transmission may take a moment to register the gear shift. Your transmission might also grind or clunk when you shift. Alternately, your transmission might slip from one gear into another (usually neutral) which can be very dangerous. And without enough fluid, your transmission can become overheated.

Transmission Fluid Changes

You should periodically check your transmission levels using your dipstick. Sometimes you can lose some fluid without experiencing a leak. In this case, you can top of the transmission fluid yourself or you can bring it into a transmission shop for a top up.

Transmission fluid changes can sometimes be a bit more complicated. Typically a fluid change is required when the fluid has become degraded or burned. You might be able to tell this yourself. Normally, transmission fluid is translucent with a reddish hue. If your fluid is opaque and/or has a foul smell to it, it is probably damaged. Also, transmission fluid can pick up too much impure matter from wear and tear within your engine. If this is the case, it has probably been detected by a technician during a pan examination.

How Transmission Fluid Changes Work

You might be able to do a transmission fluid change on your own, depending on the type of transmission you have. But sometimes it is necessary (and always a lot easier) to bring it in to a transmission shop. Here, technicians can flush out the bad transmission fluid and change it with new, better quality fluid.

Get in Touch

If you would like to learn more about transmission fluid changes or if you’d like to bring in your vehicle for a transmission fluid change, please contact us today.

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Customer Reviews
Got all my fluids changed...
Ahmer Zaki
Got all my fluids changed here on my Mercedes very good prices and they do an excellent job definitely coming back here and would highly recommend
Date: March 7, 2026
Website: Google
This location is the best....
Brandon Callaway
This location is the best. Chris is amazing to deal with. Had a torque converter and rear diff replaced and they did it really fast. Highly recommend these guys. 5 out of 5 stars
Date: March 7, 2026
Website: Google
Dan was the best. Will...
Deanna
Dan was the best. Will always come back!!
Date: March 6, 2026
Website: Google
I recently brought my car...
Chris Elliston
I recently brought my car to Mr. Transmission to have a wheel bearing and axle shaft replaced, and I couldn’t be happier with the service. The price was very fair, and the work was done professionally and efficiently.What really stood out was the customer service — they even drove me home while my car was being worked on, which made the whole experience much more convenient. It’s not easy to find a mechanic you can truly trust, but these guys are honest, reliable, and clearly care about their customers.I would highly recommend bringing your vehicle here if you’re looking for a trustworthy and dependable mechanic shop.
Date: March 6, 2026
Website: Google
Great, fast and easy
Holden DeGroot
Great, fast and easy
Date: March 6, 2026
Website: Google
Was there earlier today and...
Breanne Ferguson
Was there earlier today and I must say one of THE BEST SERVICES I've had in a long time. A good mechanic or even someone good with PROPER diagnosis even if there isnt anything wromg are very hard to come by now a days and I feel very confident that my vehicle was is great hands today. Those working there truly care about helping their customers and easing minds that are over thinking about their vehicle. I highly recommend seeing Sanjay and his Mechanic in the back! They were awesome!Again BiG BIG thank you to Mister Transmission today!Well definatley be back again if any other issues pop up (hopefully not in the foreseeable future)!
Date: March 6, 2026
Website: Google
They did a great job...
Doug
They did a great job in keeping us informed of the process andfinished all the work in a timely and professional manner. Would recommend this shop to anyone needing transmission work for an honest and thorough job. I have used them exclusively for all my transmission needs for the last 15 years. 5 out of 5 stars definitely
Date: March 6, 2026
Website: Google
Thank you, Giorgio! An honest...
Bobh Yyz
Thank you, Giorgio! An honest operator…I stopped by his Mister Transmission as a mechanic diagnosed a slow leak under my car as transmission fluid.Regardless of being tied up, Giorgio came out front to my Jeep Wrangler, crawled under, came back up, and said looks and smells like oil.He suggested the auto service shop next unit over. We went in and our explained the situation to the operator. I’m in good hands with the service shop now.Bottom line: Giorgio’s good turn, at no cost to me, quickly helped steered me in the right direction.
Date: March 6, 2026
Website: Google
They did a great job...
Doug
They did a great job in keeping us informed of the process andfinished all the work in a timely and professional manner. Would recommend this shop to anyone needing transmission work for an honest and thorough job. I have used them exclusively for all my transmission needs for the last 15 years. 5 out of 5 stars definitely
Date: March 6, 2026
Website: Google
Towed our Rav4 from the...
H M
Towed our Rav4 from the dealer who said we needed a new transmission to Mr.Transmission Exeter RD. London. Thinking we had to get a rebuild, Sanjay and his tech found it only needed a new axle and rear coupler so $000's less and so happy to have an honest shop who did not take advantage.
Date: March 6, 2026
Website: Google
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