I was wondering if it is alright to grease up the bearing in the turbo, or just leave it as it is?

I don't think you can "grease them up" It is a sealed unit lubricated by an oil feed line.

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I second that.........................its pressure lubricated.

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The best thing you can do if you remove the turbo is to install it back in without the feed line connected. Then pour some oil in and close it up. This way you know the turbo bearings are getting oil the first time you start. This is what I do.

Just my $.02

As long as you let the oil pressure come up before spooling it, it is fine. Engine oil lubes the bearings.

Also don't forget to either drive not using it for a few miles or to let the car idle before shuting it down. You have to let the turbo slow down before cutting off it's oil supply.

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