Hey all what engine oil is best for these engines? Which oils protect the best and dont burn...etc

I've been putting Penrite's SIN engine oil in my VE SS-V every 11000kms odd. I've got a service coming up so i just wanted to know whats the best oil i can get.

Also whats the best oil i can put in my stock diff? Cars done 32000kms.

Thanks.

Jon