change oil?

[Olive Drab]

hi guys,

di ko lang alam kung luma na `tong tanong ko, anyway i just shift from gasoline to diesel car ( i just bought a 2nd hand fuego ), tanong ko lang kung ano ba ang magandang engine oil & how many mil. o months ang pagpapalit?

tnx.

every 5000kms or 4 months. which ever comes first.
i use Castrol CRD.