Where teflon tape really shines (NOT) is on fuel system kludges. They feature straight threads instead of tapered so the chance of a cracked case is virtually eliminated. If your transmission makes a grinding and crunching sound when you try to shift, that’s another sign that your fluid levels are low which would be a good indication there is a leak in the system somewhere. © 2020 Cash Cars Buyer. That being said, there’s no way to define for certain how long these things will last. Look for red fluid when you move your car or if you're under the hood, look around for that same red fluid on any hoses are gaskets. You must log in or register to reply here. The banjo end seals just fine with barely any torque applied. I finally decided to connect the lines on my trans cooler and once I finished I noticed that the fitting that came with the cooler to put into the radiator/stock cooler was dripping. Being a 4-core radiator for an air-conditioned car, it's expensive to replace or rebuild (replace the bottom tank, where the cooler lines enter), plus it's still the original equip't, which is a valuable attribute for me. The cure time seems to be pretty good as well. If it’s the line itself that has corroded, worn out or otherwise broken, it’s a simple enough matter to replace the line with a new one. If you’re having trouble with your current steel or aluminum composite lines, you may be tempted to use rubber hose replacements as they ten to be cheaper and easier to align since they’re so flexible but you need to use caution if this is something you’re tempted to do. These will last longer than your typical, plain rubber line. Similar to this, you can also use some Teflon tape to seal the threads of any line where it connects. If the level is low, you may have a leak. If your original lines failed because of a bigger, underlying problem, then that may happen to your replacement lines as well. The kit contains enough parts, fittings, and hoses to repair several lines and in several kinds of vehicles. Car Burning Oil and White Smoke: Is There a Connection? Oil Cooler line connections: Use Teflon tape? Not to mention the cost associated with this. Two things to be aware of if you use the tape..... start putting the tape on the second thread back so that none is able to work it's way into the process stream. That means you'll be on the road as all your transmission fluid drains out and potentially causes your entire transmission to seize up. Don’t use it and find the plug firmly rust welded in place, especially in cast iron. Either way you should be fine. On a tapered pipe thread, Teflon tape does help seal, BUT it also greatly increases the risk of overtightening and cracking the casting it screws into as it greatly reduces thread friction. Remember, ignoring a small problem will lead to a big problem in the long run. Sites like Autozone have a wide variety of transmission cooling line assemblies you can buy. Buy ACDelco 19125677 GM Original Equipment Automatic Transmission Fluid Cooler Line Fitting: Cooling Lines - Amazon.com FREE DELIVERY possible on eligible purchases. Post by ludwig » Mon Jan 04, 2010 7:41 am . They are sold at any autopart store for around 10 bucks each. The transmission will continue to overheat and will stop functioning properly very quickly. The new ones you get may last just as long but should last longer. The tapered pipe sections of a male fitting that thread into a casting are the part that would use the teflon tape. Transmission fluid keeps it lubricated and running smoothly. If you have a leak and do not fix it, you’re on a very short clock. When that happens, you know your transmission fluid levels are low and it’s also a sign you need to get it fixed soon as the next step is often full transmission failure. If these are malfunctioning in some way, you'll be leaking transmission fluid and your system will overheat and fail pretty quickly. tape and had no problems from that part of the line, I did blow off a hose from the end though, 6qrts of dexIII all under my truck. No need for any kind of sealant in or around the connections. 2-3 turns after hand tight for the tapered NPT threads. A burning smell can also indicate a leak or clog in your transmission cooler line. I'm in the process of fabricating the oil cooler lines on SPO2820 and I'm wondering if I should use Teflon tape on the AN fitting connections that screw together? Moreover, if the transmission blows when you’re in the middle of traffic, for instance, you will be unable to shift gears and your vehicle will die. Compare These Parts Talk to the Experts. Also, for the press on fittings, … It was dripping at a rate of about a drop per second, which is a lot in my book. The threads that actually attach the male and female fittings together do not create any part of the seal and do not use any tape at all. Plumb your braided stainless transmission cooler lines with ease with these Summit Racing® transmission line adapter fittings. had the same problem, I ended up using the liquid stuff. Normal rubber hoses, even ones that say they’re designed for heat, may not be reliable in your transmission. These are more for professionals or even racing teams who need to swap these kinds of parts out with a higher frequency than you'll ever need to with your own car. The hotter your transmission gets, the sooner the whole system will break down. The AT is hooked up, at one point, to the radiator for "cooling purposes." Remember: All of these DIY articles come with a "PERFORM AT YOUR OWN RISK!!!" 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