Castrol magnatec and a dose of slick 50. Mmm niiiice..
Shell helix 10w40.
Shell Helix is often the cheapest over here, otherwise it's Total. Castrol is only a brand name these days, don't often see it over here.Shell is probably the only one worth the extra expense. Over the top when changing as often as I do though.
Personally I now get my oil off Eurocarparts when they have one of their 70% offers on. Delivered to the door in convenient containers and cheaper than getting a barrel off Smith and Allan.
Change it today and yes came out engine like it had just been pumped out of the ground.