Does someone know what the upgraded turbo oil supply tube looks like?
 

I bought what I though was the updated turbo oil supply tube.
It's a solid tube.

The one I took out has a flex section in it. I bought the truck new in 2006, so I know this has not been replaced (unless the dealer did this without telling me; I did take the truck in a couple of times, but never for anything related to the turbo).

Just wanted make sure I put back the best one. There might be pro's and con's to using each. I would think the flex section might have an advantage in the sense that it would put less pressure on the connection to the turbo....maybe even withstand a little more vibration. But, I really don't know whether the flexible or solid one is the best.

Can someone give me some help? Which one works the best?

As far as I know, there was an upgraded oil DRAIN tube, not a feed tube. The drain is larger. I would definitely use the updated drain tube, if that's what you're referring to. The supply line is the one that bolts in to the top of the turbo.

The new feed line isn't partially flex it is all solid. The drain line has less crimped pipe in it.

Ahhhh yes ok, now I know what you're talking about. Brain Fart. I think the old style flex ones had sections inside that would deteriorate and gunk up the VGT solenoid. New one is solid right?