Oil is a preference,but I have used,with great success,both on the street and racing,Castrol GTX. I live in the south where the climate is pretty hot so I use 20W50,10W30 works just fine elsewhere.
SAE 20w50 synthetic.
the best for polo AHW is 5/30 full syntatic
Amsoil
Castrol megnitech 05 W 40
5W40
5W-30
3.5 qts
the best oil for a diesel is rotella t 15w 40.
10/30
wne your changing the engine oil you need 4.5 litre
vauxhall astra 2.0 tdi,what is engine oil capacity+what type of oil is best to use pls
10w30