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oil in the right side (passenger) intercooler?

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Hello guys,

I searched a lot and everything points that some oil in driver side intercooler is normal, but mine 05 TT had quite a bit of oil drained from passenger side intercooler. Is right side turbo going or what else could be the reason for that?

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Could very well be normal depending on if it has ever been drained. Usually/normally Turbo cars will get that Oil downstream from the crankcase ventilation system and only from the Turbo if there is a seal problem. With the extra system pressure from the Turbo charged engine you can get more crankcase oil that the air/oil separator misses. That is why Oil catch cans are so popular on Turbocharged and Supercharged engines. I plan on putting two on my CTTS soon. I have two on my Audi RS6 (twin Turbo V8) and one on my Audi tt (1.8t). They don't stop all of the oil but they do cut down on the amount passing through. Audi recommends to drain the lower Intercooler hose every other oil change. I'll have to take a look in the Porsche Shop manual to see if they also make a recommendation. If you can, spray some Brake cleaner up into the Intercoolers to get some of the oil film off. The oil cuts down a slight amount on the efficiency of the intercoolers.

Edited by hahnmgh63
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Draining them is a DIY. Since Porsche chooses to use O-ring'd plastic pipes instead of slip-on Rubber hoses you should always replace the O-rings. If you can change to oil you can do this. There is a write up on it here or on Rennlist. May want to pull the plastic wheel liner and will need to remove the plastic belly pan that your remove when doing a Oil change..

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