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Give Anglia Radiators a call on 01223 314444. They should be able to give you an answer. They do refurbs and I recently saw one of their vans with intercoolers written on the back.
and its just air in there no oil or anything is there?
no just air.
You may find oil in there though as you can get minor leakage past the turbo oil seals (just wear and tear) or oil vapours from the crankcase breather