Why after changing head gasket on 2004 volvo s40 would I have massive oil coming from my turbocharger across my intercooler line and into my intake manifold?

SOURCE: S40 2.0d engine

you said oil? could it be trans fluid because of a bad radiator,if its a auto trans car/yes it could be a head gasket if this car ever had the common bad cooling fan problems,has it been wrecked,has it been overheated,have you owned it from new,/its would be rare to have a cracked block

SOURCE: oil leak

pull intake off its easy and replace pcv box and hose (dealer will know what parts you need/they have the bulliten)

SOURCE: our 2000 volvo s40 makes a howling/siren sound when accelerating

Well if the engine came with the turbo than it is essential. It will cause a critical failure at some point if it goes unfixed. Could blow up. Could seize. There is alot of things that could go wrong from this issue if it goes unresolved and none of them are good

SOURCE: What kind of oil should I put into a 2004 volvo

We use mobil 1 0w40 at the shop. Its thin at start up so it gets to the lifters while cold then its factory viscosity at operating temp. ALWAYS use mobil 1 . Its far better than any other

SOURCE: volvo 850 smoke coming from exhaust manifold

Not to worry. Run the engine up to operating temp before jumping to conclusions and let the heat burn off any excess oil. A leaf will not do any damage.Do not let the engine overheat while idling and if the oil light comes on switch off immediately.
The smoke from the exhaust is oil deposited by oily assembly hands just burning off. It should dissipate after about 15 minutes at most.(or 5 miles' drive)

Testimonial: "yup kept running it and watching stopped smoking idle eventually smoothed out. only two problems left, bad o2 sensor (knew that before i started), and a high idle, ill worry about the high idle later. :)"