has anyone ever used the can of engine restore? i seen a commercial that says it restores compression, horsepower, oil consumption, and engine life. does it really work? i bought some today for my 85 5.0 and was wondering if it works. from when i bought the car a year ago and now, it feels like it is lacking performance. maybe i am just used to it seeing as i was driving a 4 cylinder stang before the v-8. does this stuff really work? and what size tires should i get for my stock wheels? they are 15's with P225's on the front and it rubs when i turn left. thank you for any suggestions and restore product info.