The adapter connects oil lines to the cooler itself and another adapter sends "cooled" oil back into the oil pan. A blown head gasket typically affects the engine’s performance. If the block is cracked or the cylinder head is warped, your engine needs to be taken to an auto professional for major repairs. Tricks? A small type of radiator, the transmission cooler is full of hot ATF or Automatic Transmission Fluid. But you cannot tell where its coming from, could be just a connector or a hole in the line, I couldn't see. 3. The radiator has a transmission and engine oil cooler lines to it too. A sweet leak is antifreeze. 2. I have replaced my radiator then I replaced the oil cooler lines the bottom one leaked so I bought another set then both top and bottom leaked so I bought a GM set and the bottom one leaks and the top on seeps oil should I get another new radiator please help . The only thing that should leak from the line is trans fluid. If you want to have this repaired, consider YourMechanic, as a certified … Before attempting to remove, replace or rebuild the line, try to locate the source of the leak. Had the lines replaced, still leaking. you need a new head gasket..vs it;s your oil cooler… that will be 140 total sir / mam ! The heavy additive and media load in stop-leak can effectively seal tiny imperfections, perhaps even creating a soft “weld” to prevent coolant leaks, but they are not a replacement for necessary repairs. So cant say what the best way is Those are plastic endcaps, not like the old brass ones where you could just replace the top tank. You have to pull the axle to do the oil cooler lines (at least on the NNBS), which is why I never did it. If the engine is too hot, fuel may combust on compression instead of spark, detonation, which can cause severe engine damage. I'd suggest removing the fan assembly to give you more room and one of those big flat drip pans to catch all any leftover coolant and tranny fluid. Just wait for the engine to cool, refill the cooling system, and install a new radiator cap. Want Answer 0. A 30/70 blend goes even further, dropping the freezing point to -67 °F (-55 °C) and raising the boiling point to 235 °F (113 °C). Over-tightening can also cause damage to the oil cooler inside the radiator tank where a leak will lead to mixing of oil and coolant. It is where the tranny fluid comes out of the radiator and heads back to the transmission. Are all 5.7 '98 radiators the same or are there variants? I thought I got a defective pair, so I did a warranty exchange. Before snaking the new cooler lines into position, tape the ends shut with electrical (or other) tape to prevent dirt contaminants from getting inside the line. By using LiveAbout, you accept our, How to Prevent Your Classic Car From Overheating. A failing Oil Cooler: If the oil cooler leaks, the main symptom is oil in the coolant. Over time, rubber radiator hoses and heater hoses may weaken. LiveAbout uses cookies to provide you with a great user experience. The oil leak was significant and causing a mess around the drivers side front of the engine. And that fixed the problem. So, as soon as the transmission cooler lines at the radiator of your car are starting to leak, you should immediately take necessary steps to prevent a further issue from arising. Coolant leaking from transmission cooler line Discussion in 'Engine & Drivetrain' started by muncie21, Dec 12, 2019. Is this because there is no forces pushing fluid around? Leaking Transmisson or Cooler Lines? tbruz. Comment; Flag; More. A worn, weak, or leaking radiator cap will not hold pressure, lowering the boiling point and allowing coolant to boil out. All of the pulleys needed cleaned. A mechanic replaced > the fitting and line claiming the the line had a pinhole in it but it > is still leaking. I'd also check to make sure the coolant and transmission fluid didn't mix together...oily sheen on the surface when you open the rad cap. If the oil cooler starts to leak or is cracked, the engine will still perform normally. Chances are, you'll have to pull the catalytic converter to track it down. The parts stores all come up with 2 part numbers, if I recall correctly they were Dorman P/N 800-607 & 800-622. Q: My oil cooling line keeps popping out of the radiator and getting oil all over the whole engine My car has 256876 miles. On its own, water would freeze at 32 °F (0 °C) and boil at 212 °F (100 °C), making it unsuitable as an engine coolant. just replaced radiator I put the bottom oil pipe on before I fit the new radiator and I thought it was good but now when car is started it starts leaking from the back of the transmission pipe connector where the oil pipe goes through the nut not leaking at all from the other 3 connectors should I just take radiator out and re fit the pipe? If the temperature gauge is heading toward the red zone or you see a temperature warning light, you may have a coolant leak, even if you can’t see it. It's got about 370,000km (231,000 miles) and I did an engine and transmission swap last year. Can this even leak to begin with? It may also allow coolant to leak externally. Leaking oil around the lines The next thing that you may notice when it is time to replace your oil cooler line is oil leaking around the fittings of the hose. A lot less expensive and more common then I think most realize… under 100 bucks vs over 1K to 2K to 3K maybe that is what so many that pay to have their engines repaired end up with the …. Under pressure, coolant may be forced into the cylinder, flashing to steam every time the cylinder fires. Im 99% sure its an engine oil cooler line (not transmission cooler). Bubbles in the radiator or in the coolant overflow tank indicate that combustion gases are being forced into the cooling system. Replace the radiator! I still have the lines sitting in my garage taking up space. Oil was also dripping on the drive belt and being spewed all along the belt path. In both cases, the result is an overheated transmission that may stop functioning if the condition persists. Within the adapter is a gasket or rubber o-ring. While changing oil tonight I noticed that there appears to be a light leak coming from one of the hoses between the radiator and the engine. Embedded in your cooling system radiator is a transmission oil cooler, it comes as part of the radiator. 5 Related Answers Anonymous . Clicking this will make more experts see the question and we will remind you when it gets answered. The most obvious sign of a transmission cooling line leak is the presence of transmission fluid. From your description, "... oil flooding out..." it would appear that your oil cooler has burst/split, and is pumping transmission oil out onto the floor. Because air is compressible, the boiling point will lower, allowing some of the coolant to flash into steam. https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-oil-cooler A stop-leak product may save the day as a last-ditch effort, but if you have a coolant leak, a full diagnosis and repair will be required as soon as possible. Unscrew an oil cooler line from the radiator using the line wrench. 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