How Car Transmission Lines Work

By Mister Transmission

Automatic transmissions generate a lot of heat. Transmission cooling lines keep things cool but they’re susceptible to being damaged

Car transmission lines connect your vehicle’s transmission to the vehicle’s radiator. Also known as transmission cooling lines, they are typically made of metal or composite aluminium and rubber hoses because they can handle the flow of hot transmission fluid.

Your car’s transmission lines are essential to preventing the transmission from overheating by carrying hot fluid away from the transmission until it is cooled and subsequently pumped back into the transmission.

If your car’s transmission lines are damaged, they will leak, and that can lead to serious trouble if you don’t notice your car bleeding transmission fluid. But here’s the problem: most automotive transmission lines are particularly susceptible to damage or rupture owing to the fact they are exposed on the underside of your car to the weather, and to debris on the road.

How to Spot Car Transmission Line Problems
If your car’s transmission cooling lines are leaking, it’s not difficult to detect. The most obvious sign is if there’s red fluid pooling beneath your engine where you park your vehicle.

Other noteworthy warning signs that your transmission cooling lines may be leaking include:

  • You’re having trouble shifting into gear; the gears are slipping, or are shifting slowly
  • Your transmission is overheating, or you notice an unpleasant burning smell
  • You hear grinding or whining noises when gears change or the vehicle rattles or jerks when you drive
  • The “service engine soon” indicator on your dashboard lights up

If you suspect your vehicle’s transmission cooling lines are leaking, or if you have questions about preventative transmission maintenance, contact us. Take advantage of our free 21-point multi-check inspection and avoid the cost and aggravation associated with a failing transmission.

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Customer Reviews
Awesome service...Highly recommend .Manager was...
Dan Arsenault
Awesome service...Highly recommend .Manager was extremely helpful looked at my car free of charge and actually refilled my transmission fluid for Free ....Class act !!!! Definitely will be back in the future , Thanks Dan
Date: January 23, 2021
Website: Google
Great communication during the whole...
John Devries
Great communication during the whole process. Honest and no over charges.
Date: January 23, 2021
Website: Google
Excellent service and down to...
Joseph Bozzo
Excellent service and down to hearth guys, very honest. Highly recommend them to anyone.
Date: January 22, 2021
Website: Google
Contacted mr transmission in regards...
Shawn Farraway
Contacted mr transmission in regards to my suv. they got me in right away and were able to help me get back on the road. they were easy to talk to and easy to deal with. I highly recommend them for any and all services your vehicle needs.
Date: January 21, 2021
Website: Google
200% satisfaction. Very reasonable price.Mr....
Keunoh Kim
200% satisfaction. Very reasonable price.Mr. Ken who has over 30 years experienced as a mechanic is not only knowlegeble ,but frendly and thoughful. He figured out my transmission problem so easly. Receptionist is kind as well.If you are literally looking for honest and integrit, there's no doubt about it.
Date: January 21, 2021
Website: Google
Brought my truck to this...
Patrick Messier
Brought my truck to this location after discussing the symptoms of my faulty clutch.Dealt with two other garages previously who attempted to overcharge for work not needed.The manager here fixed the problem at a fraction that the other garages quoted me for.Truck drives perfect and he even threw in a free transmission oil change for some unforeseen delay.Honest and competitive. Thanks Mr Transmission.
Date: January 21, 2021
Website: Google
Really fast service. Not only...
Terry V
Really fast service. Not only was my problem fixed, you can feel how much smoother the shifter moves. Highly recommend.
Date: January 20, 2021
Website: Google
The guys at Mr transmission...
William Jensen
The guys at Mr transmission on the queensway go above and beyond expectations! They always called me to update me on the progress of diagnosing my vehicle. They fixed my leaking cooler lines, now it drives like new! Thanks guys
Date: January 18, 2021
Website: Google
Always above and beyond!Mostly my...
Samantha Prowse
Always above and beyond!Mostly my car has gone in for basic maintenance, but recently I had a hitch installed on my car. In the process of having this done it was noticed I had a sensor malfunctioning. NO PRESSURE what so ever to have this fixed at the same time. I was told the risks and given a choice. I chose to fix it as my car was in anyway, but I loved having the choice with no judgement or pressure. Pricing was fair, and definitely less than I was expecting. I didn't feel my lack of car knowledge as a female was an issue here at all. I was made to feel informed and involved. I recommend this shop to all of my friends ☺️
Date: January 17, 2021
Website: Google
The guys were greatThe owner...
Frank Losiggio
The guys were greatThe owner operator was very knowledgeable about my suvAnd was polite, and professionalI would strongly recommend these guys to other people who need transmission work done
Date: January 17, 2021
Website: Google
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