Lucas is a really good product. I work at an auto parts store and I sell tons of the stuff, and I reccommend it to everyone. I'm not a fan of additives at all, but I've been really happy with all of the lucas products, and the oil stabilizer is really good too.
I don't know about all the brushing and flossing, but if you use the injector cleaner, chances are you're going to notice a difference
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