any recommendations.....I usually fill at mobil or shell premium fuel. any thoughts??

I'll let you know how it comes out.

<ul><li><a href="http://www.fitchfuelcatalyst.com/products/auto/index.html">http://www.fitchfuelcatalyst.com/products/auto/index.html</a</li></ul>

Audi makes a fuel additive that is a constant use formula.. you use i bottle per fillup, and this keeps deposits from building,.. So, you get the BG 44k, run it thru a tank or 2, change your oil, and use preventative measures after..