What is the best fuel injector cleaner you used? I picked up some of my old favorite, duralube fuel injector cleaner for $4.50 usually cost about $11 a can. Haven't seen it at the auto shops in years. I also like BG 44k that's a pretty good product too. just dropped a can in mines last nigth, duralube. I felt the difference soon after I dropped it in, and loved how it last for like 3 months That bg cost like $20 a can bought some at the dealer once. But those are my two favorites.