jackaroo
hmm... really depends on which of these oils are available locally...

i've already checked the Mobil Delvac MX but it goes beyond the CF-4 rating since it also rated at CG-4 and CH-4... As for the Castrol Magnatec, I think the 10w40 viscosity rating is already too low for Phil. conditions although for Australia it would be fine...

looks like i'll be getting the Shell Helix Diesel Super since it is locally available as well as it being included in the list of recommended lubricants for the ZD30 Nissan Patrol...

Thank you very much for your help and likewise for the others here who contributed to my inquiry...

I'm really glad that I decided to join these forums... :D