1.6HDi intercooler conditioning/cleaning investment?

[xsara92]

I read in an older thread on here about a 1.6HDi owner who saw a really notable improvement in efficiency after they cleaned their intercooler.

Are there any tell-tale signs with this engine that the intercooler isn't working as well as it could be?

[Huskyxantia]

If its got oil in it wont help cool the air the turbo system needs . I clean mine every year. It does make a differnce.

[xsara92]

I believe there's no oil leaks in my case, perhaps therefore I can go without