On 6 jan, 02:38, Jere Lull wrote:

I'd say replace with a hose that you know will handle it. Whatever the
old line's construction, it's time to replace, whether it was caused by
the oil or not. "Stretched" sounds like you might want to make the new
line a bit longer so it doesn't have that stress.

With stretched I meant the forming of a spot with a much larger
diameter, like an aneurysma.
The lines have a reinforcement inbetween two layers and the outer
layer has come loose.
I'm even thinking about copper lines now.
Thanks for your reaction.
Len.