E30 Zone

Hello.

I have a very standard 1990 316i (m40 i think?) auto with low miles.

What is the best oil and what sort?

Castrol? Mobil?

0w40? 10w40? 15w40?

Basic novice question I know but worth asking.

Thanks in advance...

Kit

There's three Stickies in this forum, and a Wiki page:

http://www.e30zone.net/e30zonewiki/index.php/Oil

Thanks Grrrmachine.