If you were refering to my post, everyone I have been they had 98(93) and I get less knock on the 98 then the stateside 93 and that is on the Autobahn with 5th gear logs. 1-2 counts is the most I have seen since I got here. Stateside in the 1/4 I was seeing 3-4 counts every so often by the top of 4th. This tells me it's better fuel reguardless of the rating.

 

Its just a tool, take it easy. either use it or don't.

 

gas prices do suck, but the way i see it is that you need it so dont even think about it and just do it