btw check the manual but by memory the nissan method includes vacuum testing the spill line to check for leaks after fitting the spill line. i wonder how many mechanics actually do that.
that would have shown up any loose connections.
And that there is an excellent reason why we shouldn't complain too loudly about Nissan insisting that their service guys follow the "recipe" closely.
Nissan could - in this instance, and with considerable justification - say "well, we DID say it should be done OUR way..."
I don't know what kind of bearings are in your turbocharger. If they're roller bearings you might be very lucky, but I suspect they aren't - and that means they might have suffered a small amount of chemical attack of the surface.
This will ultimately cause the bearings to allow the shaft some play - which will ultimately lead to the destruction of the impeller.
If you have an intercooler - your turbo will go bye-bye but the damage will be limited to the turbocharger.
If you do NOT have an intercooler - your turbo will go bye-bye and the fragments will launch themselves across into the intake manifold and into the engine in less than a couple of thousandths of a second. These fragments could bend/damage valves, embed themselves in piston crowns, be hammered into the head, destroy injectors, glow plug tips ...
I guess what I'm saying is that if you don't have an intercooler, you could put an intercooler in (consider the XR6 intercooler as a cheap alternative that will perform the desired protective task) and save yourself a massive amount of trouble later.
