Oil Cooler Adapter Oil Leak

[spdbrake]

From what I can see the swivel on the 90 hose end appears wet.
Also that look like a AN -10 hose to 90 then integral 1/2npt end.
Like this https://www.summitracing.com/parts/e...0erl/overview/

You want to try a different hose end setup. Like a straight 90 -10 AN like this
https://www.summitracing.com/parts/vpe-21910/overview/

To a -10AN to 1/2"NPT. like this
https://www.summitracing.com/parts/e...0erl/overview/

[Whodeeny]

Originally Posted by spdbrake

From what I can see the swivel on the 90 hose end appears wet.
Also that look like a AN -10 hose to 90 then integral 1/2npt end.
Like this https://www.summitracing.com/parts/e...0erl/overview/

You want to try a different hose end setup. Like a straight 90 -10 AN like this
https://www.summitracing.com/parts/vpe-21910/overview/

To a -10AN to 1/2"NPT. like this
https://www.summitracing.com/parts/e...0erl/overview/

My initial thought was the hose fittings also but now I don't think the leak is coming from the hose. It appears to me to be coming from the flange area where the gasket is or one of the bolt holes. The threads around the hose fittings are not wet with oil but the flange area is.

[spdbrake]

You're probably right. I was focused on the swivel groove above the castellations.

For wicking leaks, cleaning the area with Electrical contact cleaner or Carb cleaner (allow to dry fully) then coating the areas with an Aluminum or Powder Anti-antiperspirant will usually show the path(s).

[patrickt]

Originally Posted by Whodeeny

My initial thought was the hose fittings also but now I don't think the leak is coming from the hose. It appears to me to be coming from the flange area where the gasket is or one of the bolt holes. The threads around the hose fittings are not wet with oil but the flange area is.

Bolt holes are notorious for leaking on a remote filter adaptor. Mine are loaded up with gasket sealant so that it is goo-ing out of all four bolts holes. But when I looked at the picture I thought it was leaking from the fitting too. If you wrap the fitting tight with a paper towel, and then run the engine for 30 seconds, and unwrap the paper towel, it should be dry as a bone. I have Teflon tape on the threads of both lines going in to my adaptor. Of course, using UV dye with a black light will tell you instantly exactly where the oil is coming out.

[Whodeeny]

Originally Posted by patrickt

Bolt holes are notorious for leaking on a remote filter adaptor. Mine are loaded up with gasket sealant so that it is goo-ing out of all four bolts holes. But when I looked at the picture I thought it was leaking from the fitting too. If you wrap the fitting tight with a paper towel, and then run the engine for 30 seconds, and unwrap the paper towel, it should be dry as a bone. I have Teflon tape on the threads of both lines going in to my adaptor. Of course, using UV dye with a black light will tell you instantly exactly where the oil is coming out.

I put Teflon tape on the threads of the hose fittings. Your comment about the bolt holes leaking is interesting. As I looked at it leaking I thought the leak may be coming from the bolt holes but I wondered how that could be. What kind of gasket sealant did you use on the bolts? I posted the picture above so that readers would know what I was talking about. Here is another picture with the engine running and the leak.

[patrickt]

I believe it is that black "ultra maximum oil resistant" Permatex RTV stuff. Here's a pic:

[spdbrake]

On you last photo it appears the upper (oil out hi-press) port is leaking. Could be cracked from the NPT fitting. (see right yellow arrow) Or as Patrick alluded to the bolt. (see left yellow arrow) Red arrow is gravity.





Just idea, you may want to swap to a different adapter.
http://www.hylube.com/products/feadapter.htm

[1795]

You might want to consider using an oil grade pipe sealant rather than RTV or teflon. I use a thread sealant that is used for natural gas, propane, oil, diesel and gas applications. It does not harden and forms a tight seal in the threads. I have found that Teflon can leak and if you retighten something with RTV you can break it loose after it has hardened. A good pipe sealant will form a lasting seal and since it does not harden, if you tighten the bolt further, it still adheres to the threads.

[patrickt]

Originally Posted by 1795

You might want to consider using an oil grade pipe sealant rather than RTV or teflon. I use a thread sealant that is used for natural gas, propane, oil, diesel and gas applications.

Well, if you went by name alone, you can't beat this: https://www.gasoila.com/products/pip...-sealants.html