Have a 2004 996tt x50....on disass'y of back end to access plugs and coils found about 8 ounces of oil in the left intercooler. Would this be caused by a leaking shaft seal in the turbo? What turbos were stock in this car? Input greatly appreciated.

 

Seems that the K24 was stock for the X50.....looking into the cost of a rebuilt turbo.

 

Oil sump vents to LH turbo's inlet tube. If sump gets pressurized or overfilled oil mist will be vented through LH turbo to LH IC.
But if LH turbo's inlet is dry, then you'll have a problem with shaft seal.

 

Thank you for your response. Sent turbo off to a repair shop for rebuild. Returned with invoice for machine shop labour on two seal ring grooves, seal rings and a seal kit. By the sounds of it they installed oversize seal rings. Hopefully this problem is history. Will remove the turbo end of the output hose in a couple of weeks to check for oil.

 

FYI you are aware the owner manual states that the engine should receive a 2 minut idle period before shut off to allow the turbos time to shed some heat.

A hot turbo "cooks" the oil remaining in the bearing which leads to subpar lubrication at next engine start up and the excessive heat can also degrade any seals.

Just a mention of this in case you are not doing this you consider doing this to help prolong the life of the repaired turbo and of course the other turbo too.

 

Heads up appreciated