MR2 3SGTE oil recommendation

[keith9849]

Just about to have a pre-MOT service and oil change on a 1989 SW20 3SGTE MR2 turbo, 70k miles. I have seen lots of people enthusing about Mobil 1, and Castrol Magnatec, and of taking the cold-viscosity lower, even on older engines. Any suggestions please?

I hope this doesn't start an argument!