3FE-What is this part?

[OkieBruiser]

The black box below and behind the oil filter. See pic. There is a hose going to it that is leaking what appears to be oil. I want to replace the hose. Can I just use any old rubber hose or is there a pressure consideration?
Thanks!

 

[Kleatus]

It's the oil cooler. That area on my truck was oily/grimey due to the leaking side cover gasket above it. That's a fun job. Oil and grease don't do heater/radiator hoses any favors. Clean it up, replace the hoses and see what's actually leaking. The OEM hoses are available.

 

[gregnash]

Yup that is the oil cooler... hoses are still available and are the exact same hose (not different ones for top/bottom) and basically straight length of said hose.

 

[OkieBruiser]

Kinda what I thought. It looks like the leak is all coming from the bottom front hose going to the pipe shown in the picture. I'll clean it up and see what's going on. BTW, how does the thing work, coolant on the other side? I couldn't get a good look at the whole thing.

 

[Output Shaft]

It's a heat exchanger. Although most people (and Toyota) call it an "oil cooler" it is equally an oil warmer when the engine is warming up. Coolant warms up much faster than the motor oil, and this exchanger heats up the oil to coolant temp much faster. That's a very good thing...especially when you've got over 2 gallons of freezing oil (in the winter) sitting in the pan. Coolant flows on one side, oil on the other.

 

[LAMBCRUSHER]

has anyone ever bypassed the coolant lines, flushed the thing and run a hose from a creek thru one for showers and whatnots??? ooooh, I bet some double deep banjo bolts could let a guy stack a pair of em; one for the truck, and one for the dishes! whoever twists these up, just kick me down a set for the idea...

 

[Kleatus]

There are ready made kits for that available from a number of places (Helton) and a pretty effective one can me made with copper tube and pipe if you were so inclined.

has anyone ever bypassed the coolant lines, flushed the thing and run a hose from a creek thru one for showers and whatnots??? ooooh, I bet some double deep banjo bolts could let a guy stack a pair of em; one for the truck, and one for the dishes! whoever twists these up, just kick me down a set for the idea...

 

[LAMBCRUSHER]

so who do I talk to for my free set?

 

[TobyB]

I'll bet you it doesn't get even lukewarm at idle! OS is dead- on- in lots of cases, it's acting as an oil heater.

It'd be pretty easy to hook up a water- to- water heat exchanger in the coolant system somewhere...

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