Ian is correct .. the bad news ZD30 were up to 2003 BUILT [not sold] engine. Thereafter Nissan woke up and sorted the Euro Spec ECU on the ZD ro PATROL engine.
at 94 000 you have 106 000 to go before to worry.
MAIN NB NB NB Thing to do is INSTALL AN EGT READER immediately if you have not done so yet.
Then set the alarm for 680 degree C [but always drive at below 600] and below 500 when cruising.
KEEP THE TURBO AND INJECTORS Clean .. I propagate Caltex Dulo 400 Oil, service every 15,000 but oil change every 10 000 and after every extended dust trip.
That is my take on the ZD 30 [If I could afford a post 2004 ZD30 Patrol it would be in my driveway now. [yes, i had a ZD 30 blow on me BUT the dealer was at fault AND I did not have an EGT reader installed