This is a general question rather than a question for my car. You walk into any auto parts store, and you find dozens of bottles claiming to fix anything from bad gaskets to engine sludge to A/C leaks; as well as those that claim to improve performance and gas mileage. This is a multi-billion dollar industry. As mechanics, how would you rate the claims of these products? Are there any that you do recommend?
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Monday, September 17th, 2018 AT 11:15 PM