Question on replacing the fork oil

[IG.]

OK, I read the manual, I read the instructions in DIY section (most pictures are missing), and still not clear.

All I want to do is to replace the fork oil.

When I unscrew the cap, is it going to pop up (it's spring loaded, right)?

After the cap is out, can I just drain oil and put the new one in, or do I need to remove a bunch of stuff using special tool, etc.

What kind of oil should I use (gear oil)? What weight?

The 98 mm oil level, is it from the top of the outer tube (assuming it's fully compressed)?

[sixpack577]

5w is stock, 7w supposedly provides better rebound adjustment. 10w supposedly can slow down fork operation. I'de replace the seals while you've got it apart. They're cheap, around $40. You'll get a good understanding of how everything works taking it down to replace them.
I got things resolved with a seal order I had and I'm still waiting on the 7w oil I ordered.
The manual may be a little confusing, but as you take the forks apart, you'll see all the info you need is there.

[sixpack577]

You can't just drain the oil and refill it either.

[IG.]

Thanks.