Not exactly experience & not this product, but I once went to AutoZone to get some Bars stop leak, I had a 2006 Chevy uplander that was leaking oil, I ask the woman that was working if the stuff worked & she said she doesn't recommend in, I asked why not & she replied because if it seals the head gasket then it will seal things that don't need to be sealed in the engine such as passages that the engine needs to run efficiently, I ended up not buying the product.