ends tomorrow for anyone who's interested. seemed like a good deal
edit: as suggested by dfk367. The link below will advice if the oil is suitable for you car or not.
Datateck.com.au
Mod: Link for eBay store. Use PULL5 code for purchases $30+ to receive a further 5% off. Original PULL5 deal
@pronoun:
It really depends on what your manual says. Check it. Since we live in a warmer climate, my manual says I can use 5w-30 all the way up to 20w-50. The first number is cold viscosity (thickness) and the second number is warm oil viscosity.
In colder climates you generally want thinner oil so it's not too thick from the colder weather. In Australia, we can use most types, unless your car is newer and more restrictive on what is allowed.
My car is older so is more flexible in this requirement.