Boy the internet is great. Just a few clicks and there you go: 2% is common and in is in fact what I got.

http://www.vafb.com/news/2003/june/062603_2.htm

I was hoping for B20 just to see if it made an obvious difference

__________________
Alan Hamm
'87 300SDL 277K Miles
'89 560 SL 68K Miles