I use BP Ultimate or Chevron Ultimate w/Techron and run a bottle of the chevron techron gas stuff through every 1-2 months. Still hasn't helped any. I only get a little better mileage than my wife's 96 Explorer with the 302 V8.  
1999 Contour SVT ~ Black w/Tan
Current Mods: Fog light rewire, 20% Tint, SVT Banner,Rockford Fosgate RFX-8340, 2-12" Bostwick SPL Subs & Audiobahn 600x2
Future Mods: Knauberizing it, lowering
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