2007 xc 70 turbo 230k miles

raquette · Post by **raquette** » 02 Sep 2019, 07:45

oil is accumulating on the rubber hoses (at the clamps) that go to the turbo. no change in performance.

what is causing this and what is the remedy?

Post by **Antoine240bk** » 02 Sep 2019, 08:12

Do you mean this?
I think this is mostly oil vapor leaking. i've tried to tighten all the clamps but it was still leaking.
I changed with good silicone hoses and T-bolt clamps, works fine.
Someone here suggested that excessive leaking could be the cause of a bad breather system.

Post by **bmdubya1198** » 02 Sep 2019, 08:42

My rubber intercooler hoses are nasty... it's not exactly indicative of something wrong, but the hoses should be replaced.

I wouldn't be surprised if it was related to a backed up PCV system... my '01 S60's hose looked similar to the pictured above and that PCV was pretty bad. Plus it makes sense... more blow by=more oil in intake tract=oil-saturated IC hoses.

Post by **abscate** » 02 Sep 2019, 10:03

Antoine240bk wrote: ↑02 Sep 2019, 08:12 Do you mean this?
I think this is mostly oil vapor leaking. i've tried to tighten all the clamps but it was still leaking.
I changed with good silicone hoses and T-bolt clamps, works fine.
Someone here suggested that excessive leaking could be the cause of a bad breather system.

Nice hoses and clamps. That bottom hard pipe-intercooler pipe is the one that gathers up all the oil and nastiness - if you are on a budget do that one first. The rest you can clean and put new clamps and get away with it.