Project hopeful, no will power

[Dum-Dum]

That was the reason I bought it to spot air ingress just makes diagnostics easier in the long run. Holds shape really well as well so that's a bonus.

I used a short stretch of the stuff on mine only in the engine bay so I could see if it wasn't holding up to it as although apparently OK I didn't entirely trust it. It's food grade PP or PE (the same stuff as the standard short stretch of return line is made out of) and advertised as being suitable for fuel, oil, WVO etc. Also the 10mm stuff and upwards is reinforced too (you can see the white cris cross bits) so that's a bonus.