zd30

Looking at buying my first diesel. Keen on a 4.2 but everyone I look at looks like it’s been thrashed, has half a million k’a and they want $30,000 for them. There’s a bloke at work selling an 07 common rail 200xxxks has all the engine saver mods and looks clean as and only wanting $16,000 for it. But I have heard to stay away from zd30 and then have been told if it’s a common rail and has the engine saver mods I’ll be fine? Need some opinions and people with a 3L how many Ks yours has? Cheers!