Hi all, fng here. I'm looking for some guidance on buying a diesel Suburban. I know how to inspect a used car, including 4x4's, but I know *nothing* about diesel engines. I'm basically looking at an older truck, something in the $7k and under range. I'm guessing that puts me in either a pre-91, or possibly something from the 92-99 generation. I get that the later models had the 6.5 turbo, is there anything bad I should know about either engine setup with the Suburban? Thanks for helping a new guy!