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Originally Posted by white46
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Have used it multiple times on several vehicles, no issues. Yes, code up front, but clears once the smoke show is over.
Does it help? It can at times. Will not fix a real mechanical issue, but if there is some buildup, possible. For me, I just keep my injectors clean, run good gas, short fluid intervals, and if something breaks like a trans or engine, yank the thing and rebuild it.