Transmission Additives- Do They Work?

By Mister Transmission

When it comes to transmission additives, why are the shelves at most auto suppliers loaded with “miracle” fluids that will allegedly make up for a prior lack of maintenance? Can these additives actually fix a transmission?

Let`s be frank. There are no “miracle” fluids that can substitute for preventative maintenance, this is just common sense. The only way to repair a transmission problem is to properly diagnose it by road testing, scanning the computer, and removing the pan for inspection.

Fluid additives do offer limited benefits for vehicles being used for certain tasks or in certain climates or weather conditions. Here we’ll cover the basics of ATF importance, why most vehicles don’t require these additives and the instances when ATF additives can help.

First of all, a refresher on why we need ATF in the first place. ATF is essential to the smooth running of a vehicle’s transmission. ATF has lubricants, protectants and detergents that protect the transmission and keeps it in good working order.

Generally, most vehicles are simply used to take people to work, school or shopping so don’t need ATF additives. For these everyday activities the manufacturer recommended automatic transmission fluid alone should be enough to protect the transmission in most situations they will encounter. As long as the owner of the vehicle takes the time to makes sure there is enough transmission fluid in it and they change the transmission fluid when it is dirty there should be no need for an automatic transmission fluid additive.

There is no fluid that will:

  • unclog plugged filters
  • free-up stuck valves/solenoids
  • reduce internal corrosion
  • improve shift feel/firmness
  • prolong the life of your transmission
  • replace the friction material on your transmission’s clutch plates
  • put the teeth back on the stripped gears

Keep in mind that most vehicle manufacturers have warnings in their owner’s manuals stating: “Do not use supplemental oil additives, cleaners or other treatments. They are unnecessary and could lead to damage that is not covered by warranty.” Or: “Using supplemental additives is generally unnecessary and can even be harmful. One should never use an additive to attempt to fix a mechanical problem.”

Who could benefit from using additives?

A small majority of vehicle owners could potentially benefit from using these additives. Mainly, vehicles with high mileage which are constantly being used to tow heavy loads in adverse weather conditions. Heat and wear are the enemies of a transmission. Vehicles which are involved in racing or towing heavy loads are hard on transmissions. They often generate excessive heat. While transmissions have built-in systems to mitigate some of this heat and strain these activities cause, the transmissions in vehicles which are under a great deal of stress can often benefit from using automatic transmission fluid additives.

For the owners of these vehicles the minor cost of additives makes using them a no brainer. Hence, there seem to be instances when ATF additives can help yet even in those situations, however, it is essential to get the right ATF additive.

So, the next time someone tells you they have a miraculous transmission additive for sale you’ll know better.

If you’re experiencing any sort of transmission problem, please contact your local Mister Transmission and book an appointment for our FREE 21-Point Multi-Check Inspection.

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Customer Reviews
Super proffesional, problem solved and...
Angus Murray
Super proffesional, problem solved and the bill was as quoted. What else is there!
Date: May 25, 2022
Website: Google
Amazing. Had another place fix...
Rob Jackson
Amazing. Had another place fix my manual transmission and it fell apart in under two weeks. So I went to the pros and that they are. Pulled it apart and had me back together in no time. The only place to get your transmission issues fixed properly and fast. Thanks guys
Date: May 25, 2022
Website: Google
They were great on the...
Sandy Shropshire
They were great on the phone and in person when we needed to get our vehicle towed in. Thanks Chris and Christine
Date: May 25, 2022
Website: Google
Matt and his team are...
LovelaceBreh
Matt and his team are a breathe of fresh air to work with after years of headaches with untrustworthy mechanics & shops. I drive a lifted truck and had my transmission replaced here a few months ago and I've had nothing but great, honest service since my very first phone call with Matt. I usually do all my own maintenance but I felt so confident, I've taken my truck here 4/5 times since (unrelated issues) even sometimes for little things that I could fix myself, just because I trust them to do a thorough job and give me all the details step by step. ALSO, As someone whos had issues with mechanics "Joy Riding" their vehicles before I was ecstatic to see that Matt & his team take extreme care when test driving vehicles (hidden dashcam, so its not because they noticed they were being watched)This is the first ever review I've written for anything, ever. So rest assured the service at Mr. Transmission on Bath Road had to have been pretty awesome for me to leave this.Thanks guys hopefully I don't ever see you again LOL
Date: May 24, 2022
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Wonderful staff very friendly, there...
Tristan W
Wonderful staff very friendly, there there for you and not like many shops that’s there staffs attitude when you walk in the door, very helpful and honest! Great place
Date: May 24, 2022
Website: Google
Matt and his team are...
LovelaceBreh
Matt and his team are a breathe of fresh air to work with after years of headaches with untrustworthy mechanics & shops. I drive a lifted truck and had my transmission replaced here a few months ago and I've had nothing but great, honest service since my very first phone call with Matt. I usually do all my own maintenance but I felt so confident, I've taken my truck here 4/5 times since (unrelated issues) even sometimes for little things that I could fix myself, just because I trust them to do a thorough job and give me all the details step by step. ALSO, As someone whos had issues with mechanics "Joy Riding" their vehicles before I was ecstatic to see that Matt & his team take extreme care when test driving vehicles (hidden dashcam, so its not because they noticed they were being watched)This is the first ever review I've written for anything, ever. So rest assured the service at Mr. Transmission on Bath Road had to have been pretty awesome for me to leave this.Thanks guys hopefully I don't ever see you again LOL
Date: May 24, 2022
Website: Google
great work done there
Ljm M
great work done there
Date: May 23, 2022
Website: Google
Dealt with Ken on two...
David Branicky
Dealt with Ken on two seperate occasions and both times he was honest and very helpful.Once I brought my 2003 Dodge Caravan in where I could not drive forward after a hard stop but after a few seconds it would start driving again. So I thought my transmission was starting to give up and would eventually need to be replaced but it turned out to be as simple as my transmission fluid level was low. So once he topped it up I never had that issue again and drove the van another 80k before selling it.
Date: May 22, 2022
Website: Google
I called this shop about...
Michael Cormier
I called this shop about 3 years ago when my 2010 Pontiac G5 needed a new clutch , I spoke with Jason and his price quote was $500.less than any of the other transmission repair shops I had called for quotes . The turnaround was quick and the repair was done for the quoted price and within the time they said it would take , I was extremely pleased ! When my check engine light came on last night and the cars engine power was reduced I called the shop this morning (Friday of a long weekend) and spoke with Jen , they were able to do a diagnostic test and reset , I got my car back within 3 hours when I asked how much they said no charge ! these guys and gals are the best and very trustworthy ! 10 out of 10 stars , Mike in Toronto
Date: May 21, 2022
Website: Google
Want to repair transmission of...
Prajnesh Yajnik
Want to repair transmission of your car, visit this place. A known place for transmission repairs or replaces.
Date: May 21, 2022
Website: Google
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