Amsoil full synthetic

[DAVE01]

If you follow the link there are lots of comparisons to other oils,I use the Rd50 racing oil in the Vette because of the high zinc levels that older v8 engines need.[zinc was removed from oils because it shortens the life of catalytic converters which maters to some but not a good thing for older flat tappet engines]
The motorcycle oil is available on ebay au at the moment but it can be sourced cheaper.
This oil is the first true 100% synthetic oil made.