Well go on then!

I know a little but not much. Tell me all I need to know. You know, brands, weights etc.....

Take it away.....

Brand won't make a huge difference, I normally use what the local shop stocks, and that's Shell .
15w will do it, or if you prefer firmer, 20w should be OK.
Clean the forks out with Kero' and leave upside down to drain.

I haven't checked what the standard oil is in the Fatty yet.

I do remember when I got the bike back after the repair from the crash I nearly broke both wrists going up the driveway gutter.

I suspected the shop had put a different weight oil in. After a few questions they pulled out the service sheet and said they had put the same oil they used on the Sreamin Eagle bikes back then.

Got them to change it back then and there. Way too firm.

The SE fork oil is meant to be 15w from memory, so maybe you need to use 10w for more comfort !