Крис Младенов Oil in the TDI Intercooler: Turbo or Breather? You take off an intercooler hose and find oil inside. Your first thought? "That's it, the turbo's gone." I get it. Sometimes you're right, but a little oil in the intake system is perfectly normal. If... Crankcase ventilation Intercooler Oil Turbocharger Mar 14, 2026