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
Took my 2012 Nissan Altima...
Jasbir Singh
Took my 2012 Nissan Altima to the dealer in Mississauga because the car wouldn't pick up speed properly. They said the transmission needed replacing and gave me an estimate that was really expensive. Another customer in the waiting area at the dealer recommended I try Mister Transmission so I called the store in Brampton because it was close to my work. I am very glad I did. They fixed my problem for a lot less and they were very professional in explaining what was wrong. I picked up my car 3 days ago and it is working great now. Thank you Mister Transmission.
Date: September 20, 2020
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Highly recommend this location! Ken...
W LU
Highly recommend this location! Ken is the best. Mr. Ken Barone is an amazing automotive technician, he know his stuff, he fixed my car left wheel noise problems in mins. It's been 16 months, the problem never came out again, and now my old corolla is steady and in a very good condition. I think it's necessary to write a great review again for this location, especially in this difficult time. If your car has a problem, go to this location, Ken will fix your problem.
Date: September 20, 2020
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Great place. Fast delivery on...
Christine Dickson
Great place. Fast delivery on parts.
Date: September 19, 2020
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My truck transmission blew out...
J
My truck transmission blew out on a Saturday morning, I contacted them early afternoon. Mark (owner)told me best to get it towed asap to the shop,which I did.He contacted me on the Monday and informed me the damages.Was a major rebuild.On the following Friday the truck was ready and drove like new.They contacted several times informing me about prices,very professional and knowledgeable. Always answered my questions and the price was amazing compared to anyone out there.I wouldn't hesitate to send anyone to this place,top notch service and very friendly service!!
Date: September 19, 2020
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If your looking for the...
S OB
If your looking for the best service and work ethic, in Alberta, these guys are it. Transmission shops are notorious for bad reputations. I own a 2003 custom land rover and trust it with basically no one but these guys now. I waited for 3yrs to find the right people to do the work. They not only did what I asked, but way over and above. Mel is an absolute pleasure to deal with.I was referred to Excel by Family that own Popo and Sons on Lacombe. Best advice in yrs.
Date: September 19, 2020
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My truck transmission blew out...
J
My truck transmission blew out on a Saturday morning, I contacted them early afternoon. Mark (owner)told me best to get it towed asap to the shop,which I did.He contacted me on the Monday and informed me the damages.Was a major rebuild.On the following Friday the truck was ready and drove like new.They contacted several times informing me about prices,very professional and knowledgeable. Always answered my questions and the price was amazing compared to anyone out there.I wouldn't hesitate to send anyone to this place,top notch service and very friendly service!!
Date: September 19, 2020
Website: Google
My truck transmission blew out...
J
My truck transmission blew out on a Saturday morning, I contacted them early afternoon. Mark (owner)told me best to get it towed asap to the shop,which I did.He contacted me on the Monday and informed me the damages.Was a major rebuild.On the following Friday the truck was ready and drove like new.They contacted several times informing me about prices,very professional and knowledgeable. Always answered my questions and the price was amazing compared to anyone out there.I wouldn't hesitate to send anyone to this place,top notch service and very friendly service!!
Date: September 19, 2020
Website: Google
Excellent service
Michael Gardner
Excellent service
Date: September 18, 2020
Website: Google
Was convinced I had a...
Jonathan Campbell
Was convinced I had a transmission failure and was prepared for a big bill but they spent the time to diagnose that it wasn't transmission related. Let me know where to go with no charge. Very honest.
Date: September 17, 2020
Website: Google
Called Friday afternoon and booked...
Clarence Benson
Called Friday afternoon and booked me in for 8am Monday.👍
Date: September 17, 2020
Website: Google
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