Finished up fitting my wellycooler today but when taking off the old oem cooler, I found some oil in, notably the cold side pipe into the throttle body.
TB was cleaned about a year ago and wasn't very dirty but I was wondering if this was a problem and if so, what?
Oil comes from the crankcase ventilation and is normal. If the turbo was to go pop you may also find a lot of oil in there from that if the seals fail.
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