• SendMePhotos@lemmy.world
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      5 months ago

      I would have to disagree on this one. Working in the auto industry has helped me see that they do help in long term circumstances. Like every 20k miles or so. Knocks off some of the impurity burn offs that stick on the valves.

      • batmaniam@lemmy.world
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        5 months ago

        Yeah agree. They’re kind of sold as a cure all, which they’re not, but if you have a very specific problem they’ll help. I think the thing is a lot of times people use them without addressing the root cause. But it’s definitely saved me a deep clean before.