Cummins Reman Turbo

[Mr Hagg]

I am thinking it is due to idling the engine for long amounts of time with turbo not spooling up enough to had a positive pressure. Then its will pull oil from inside. Just spoke with a local turbo rebuilder here a few mile away from us and he said these have a floating bearing seal type and if the turbo speeds are to low it will cause it to leak oil.