I have just bought a used turbo for my 1995 6.5 diesel. The seller told me I need to prime the turbo before starting the motor. Does anyone know what this means? How do I prime the turbo?

Well, the only thing that I can think of is they want you to get oil into the turbo's bearings so that it doesn't start dry. If you are removing a turbo, and reusing the oil line, then there should be oil in that line. You could just slowly pour oil into the inlet for a little while maybe spin it a little by hand while doing that. I have also heard of people holding the turbo, preventing it from spinning, and put the oil feed line in a bucket or something, and start the engine until oil comes out. Then shut off the engine and attach the line to the turbo. (I myself don't think that is necessary)

never heard of priming a turbo. wouldn't hurt to pour some oil into the sump before start up. i never have though.

Ok thanks, I have never heard of that either but thought I would ask.

I would put some oil in it before starting so that it's not dry.

Priming a turbo is the same as priming an engine, you're filling the oil passages with oil.

How you do so is totally different.

My new GM-8 came with an instruction card.

Right after bolting everything back up, PRIOR to attatching the oil feed, and oil drain, send a LITTLE amount of oil through the turbo through the feed until oil drips out the oil return. All primed and done, a few spins won't hurt either.

How much oil should you put in it?

Enough so that you have oil drippin out....