No offence taken appreciate your help…I’m not mechanically minded that much so maybe didn’t explain it properly to them. I did phone beyond performance 4x4 in n’abbey about replacing section of the ACE where issue is (though at this stage not sure exactly where it is) but they said (like others) you’ll need to replace it all—no one seems to want to tackle a section of it

Not being funny, but if you don't know where the leak is how do you know you need the pipes unless I've misunderstood your previous comment about not knowing where it is, and how did you find out you need the pipes? although the pipes corroding are a strong possibility, but it could also be the seals where the pipes fit the valve block, the valve block itself corroded, filter plug 'o' ring etc. until you confirm the actual location of the leak it's difficult to know what you require.

Cheers
Col

Take your point but 2 different mechanics told me it’s the ACE pipes that are leaking and need replacing however I’m not sure exactly where they are leaking