I live in Iowa and even though I hardly drive the car in the winter I still had an oil cooler line rust out and start leaking. It was the front half of the line that went from the engine to the oil cooler on the drivers side. Since the quick disconnect was fused together I needed to replace the whole line. The dealer wanted about $650!!!!!!! So I decided to just cut out that bad, get some barbed brass fittings, pipe, couplers and some hose clamps and take care of it myself.










This ended up being a little too long so I removed one of the 5" pipes and all was good. I ran this set up for a day and no leaks

 

Did you use off the shelf copper pipes?? A lot of industrial test plants use copper pipes to accelerate the oxidation of oils, you probably dont want to be using that on engine oil...

 

I'm glad I don't have to worry about rust in Texas.

 

Brass