Hi, If oil has in the past got into the ducting / intercooler, and you have stopped further oil from the engine breather getting into the turbo, you still may have oil in the intercooler. The cooler can be easily removed and internally cleaned, but you can let any oil out in situ using the drain plug. It is on the LH side above a small plastic blank plate. You cannot see the drain plug unless you remove the plate. After you fave drained the intercooler, you could also disconnect the over engine breather tube at the turbo inlet hose. Temporaly fit plug cap ( to the outside of the inlet duct connection so nothing gets sucked into the turbo) Then add a bit of pipe to the over engine breather pipe and put the pipe into a plastic bottle ( with a big enough hole to allow air to escape past hose). Put the plastic bottle where it won't catch in moving or hot parts. See if oil is gathering in bottle over the next few days driving. If the car still blows blue smoke ( and the breather is clear - as in you can blow down down the breather pipe and hear air in the open oil cap), the turbo could be suspect or there could be high crankcase air pressure ( due to ring wear) which is prevenving the oil drain from the turbo to the sump. Also, the turbo oil drain line could be blocked, but it is a 1/2" ID pipe with few bends.
ivor940
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