Diesel going off

[Odd Job]

Originally Posted by BillyRover

I used to have to use 4 star in my mini ... And i couldn't leave my Rascal idle for more than 4 weeks or so without having to drop the modern petrol out the carb and replace with new or she wouldn't fire. I hear the ethanol corrodes old rubber pipes too and that would make sense as I carried self amalgamating tape in my glove box because I sprung that many leaks! Anyway I've never had an issue with diesel

Spot on with "rubber" pipes.
I replaced all the rubber pipes on my Mini a couple of years ago. The only one I didn't replace was the one coming out of my fuel tank.
Two years on, I had to replace them again. They had cracked, but luckily not leaking.
The one I had left is still on!
Modern "rubber" is rubbish. It sort of goes brittle, almost plastic like.
Not sure if it's the ethanol or if it's just rubbish rubber.