Nissan Patrol: Which 3.0-litre turbo diesels are affected?

The problems don't appear to affect vehicles built after 2000. The engines that appear most affected are the 2.8 and 3.0-litre turbo diesels built between 1998 and 2000. There was a problem with the oil level on the 3.0-litre which caused catastrophic engine failure, but was fixed by increasing the amount of oil in the sump. The 2.8-litre engine had problems with head gaskets, but both appear to have been fixed and shouldn't affect new models.