Originally Posted by
Twellsie
purely a guess, but, old turbo was fooked hence leaving oil in you intake system, the hose on the inlet to the intecooler was not sealed correctly and join between core/outlet piece has a split in it.
proberly way off the mark, lol
best bet is to get you intercooler pressure tested
spent alot of time on getting the old oil out b4 fitting new turbo but i do think its possibly a fooked core