GMC 2500 hd duramax 6.6

Asked by Jan 14, 2016 at 10:48 PM about the 2005 GMC Sierra 2500HD

Question type: Maintenance & Repair

After driving it about 30 miles  to work my
oil pressure drops to 0 .checked the oil oil
level none on the stick. I put 1/2 gal to top it
off. O. The way home it dropped again. No
oil on the ground, truck not smoking, tail
pipe is dry, no oil under the trk. Where is the
oil going? What might be causing this?
Thanks for the help and info.

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