I ordered 8 quarts of Mobil 1 5w 40 Turbo Diesel oil from the AutoBarn. It should be here in a coulple days, but before I change it... I'm pretty sure my turbo is eating my oil. Looks like about a quart every 800 miles or so. When I first got the car (my first diesel...) I brought it to the dealership shop to be checked out. They informed me that the turbo was not working. They diagnosed it as having a clogged boost fuel pressure valve and fixed it for a cool $275. Ouch.
I know it's not uncommon for the turbo to eat some oil, but is there a way to fix it? Honestly, I can't tell if it even works. I've got good pickup - especially because I'm alda-free - and I can easily pass people on the highway, but I don't hear any spooling or whirring. It doesn't help that this is the only Turbo Diesel I've ever driven, so I have nothing to compare it to.

SO... how can I tell if it is in fact the turbo that is taking the oil? How can I fix that? How can I tell if the turbo works? Is a "boost fuel pressure valve" a different way of saying something I may be more familiar with? If not, how do I check if it's clogged?

There's my first post and first 5 questions of 2007. Thanks for all the help in 2006! Happy New Year, everyone!
-Jim

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1983 MB 300SD Turbo Diesel