Looking at a 2005 CRD Liberty with 71K. after a short test drive i checked the blow by and was shocked at the amount of "gas" being expelled. If my LB7 Duramax was doing that I would have serious concerns.
I have attached a link to a short video of the blow by any feedback would be greatly appreciated
Thank you,

http://www.youtube.com/watch?v=-qzXs6G4kMM

It depends on if it smelled like exhaust... It might not have been blow-by at all and was just normal oil vapor. There's a reason many of us have CCV filters The ratio of displacement to overall vapor expansion capacity is probably greater in the little inline 4 than you're used to on your duramax. Ultimately, a compression test or just smelling the fumes will tell you more than my speculation, though.

Dan

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2005 Silver CRD Limited
245/75R16 GoodYear Duratracs
Fumoto drain | ProVent CCV Filter
Stanadyne FM100 filter | Cummins fuel pump
GDE Eco | SEGR | BoulderBars | FrankenLift | Frankenskids

That looks completly normal to me. We have a crank case ventilation that you can attach a hose to and run into a catch container instead of sending all those vapors back throuth the turbo charger like they are from the factory. I have run mine into a catch can for about 100k and no problems I just have to change the paper towels about every other month after they get completly soaked with oil. Much better than sending it back through the turbo.

Thanks for the replies,
My wife and I went ahead with the purchase. This looks like a great site with loads of info. look forward to doing the "ProVent" or the crank case ventilation system.

Adrian

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2005 Silver CRD Sport, GDE ECO, SAMCO Tubing
2003 Silverado HD 2500 6.6 Duramax LB7 ZF6 (EDGE Juice w Attitude)
1983 300sd (turbo diesel)

Mine looks the same, I was wondering the same because my 7.3L ford has almost none and if it did I guess it's no good!

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-05 Dark Khaki Limited CRD. GDE ECO tune. In-tank lift pump, Transgo doo doo kit, B&M trans cooler, replaced trans solenoid pack and filters, Newer Michelin tires, Timing belt with all related parts replaced at 110,000miles.

Your Duramax is a V8 with more overlap between power strokes. As you can see the CRD blows it out and sucks it back in with the oil fill cap off. I would not worry about it.

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2006 Pearl Green CRD
Magnaflow 2 1/2" Cat Back
KJ Extra Leg Room Brackets, Carter Lift Pump, V6 Airbox, ORM
Fuel cooler, Oil Separator, Progard 7
Gauges EGT Boost Trans Temp Oil Pres, Michelin LXT AT2 245 70 R16
7,000# Draw Tight hitch, PML EX Deep Trans Pan
Centrifuge, SunCoast, Transgo, RAM TCM, InMotion Stage 2
Wife's 99 TDI VW Beetle

Good to know, its normal !

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-05 Dark Khaki Limited CRD. GDE ECO tune. In-tank lift pump, Transgo doo doo kit, B&M trans cooler, replaced trans solenoid pack and filters, Newer Michelin tires, Timing belt with all related parts replaced at 110,000miles.