What causes oil to leak from transmission cooler?

Oil leaking or “weeping” from the hose or coupling can be caused when the hose deteriorates at the crimp site due to excessive heat. Exterior damage can be a result of oil contamination to the hose, prolonged exposure to ozone from auto exhaust, excess heat wear from any abrasion, and road debris.

What do you need to know about transmission cooler installation?

The below transmission cooler installation diagram shows the transmission fluid flow direction and how the fluid will be routed through a new external cooler. You will need to determine which line is the return for the transmission.

What are the different types of transmission cooler lines?

Types of Transmission Cooler Lines 1 Metal Transmission Cooler Lines. Metal transmission cooler lines are typically pre-bent with fittings that are held on by a flare at each end of the line. 2 Rubber Transmission Lines. 3 Nylon Braided Transmission Cooler Lines. 4 Steel braided Transmission Cooler Lines. 5 Hose Clamps. …

Do you bypass the radiator with a transmission cooler?

A common question we get asked is whether you should bypass the radiator with your external transmission cooler. The answer to this is, it depends the condition your vehicle is facing. If you live in a very warm area, it may be better to bypass the factory transmission cooler in the radiator in favor of a larger, external transmission cooler.

Do you need a transmission cooler for Drag Race?

In some applications however, it may be best to have a remote mounted transmission cooler that utilizes a fan to help cool the fluid. This is typically found in more extreme applications such as those who drag race or tow for example. Where ever your cooler is mounted, it needs to get enough air flow to help keep the fluid cool.

What to do if your oil cooler is leaking?

If using a cutoff wheel, you will get burning rubber and oil smell. Use the flat blade screwdriver as a pry tool and pliers to remove the crimp from the oil line. A quick tug will seperate the rubber hose from the aluminum line. Have a drain pan close by as oil will come pouring out of the seperated lines.

How big is the hole in the oil cooler line?

The bottom hard line is the original, you can see the rub on the left hand side, there is a pin size hole that dropped 1.5 qts of oil all over the underside of my truck. Good information here. may be a little more difficult to do it on the truck. Usually they tend to leak closer to the Block then up by the radiator. Good info nevertheless.

What causes a transmission cooler line to split?

Split or dented tubing can be due to road debris, rust aggravated by high salt concentrations or simply an impact from an accident. Leaking at threaded terminations can be caused by worn O-rings and gaskets, improper installation or the threads have become stripped for some reason.

What’s the pressure on the oil cooler line?

It is the oil cooler line pressure rated @ 300psi, NOT the transmission line rated at 400psi. Once clean and dry, hook up the new hose w/ the worm gear clamps.

What kind of hose to use for transmission cooler lines?

DIYers may be tempted to use any hose available in the garage but only new high-quality hoses made with chlorinated polyethylene (CPE) with a Hypalon cover (Hypalon is a synthetic rubber material resistant to chemicals, temperature extremes, and ultraviolet light) should be used.

Why are transmission cooler lines made of nylon?

Nylon braided transmission cooler lines, like their name indicates, are rubber lines encased in a protective nylon cover. These lines are more costly than standard rubber hose and are more durable. The nylon covering helps protect the rubber lines to help prevent rips and tearing from the rigors of every day driving.

https://www.youtube.com/watch?v=gDKmf2IdHt4

What causes oil to leak from transmission cooler?