I've used a product called "Restore" in two cars I've had in the past, a 1989 Mirage with 157,000 miles and a 1992 Buick Skylark with 105,000, I use dino oil in both (castrol gtx and havoline) and it seemed to make the cars idle better and provide a little more power, especially in the Mirage, has anyone else ever used "Restore" with any success? It claims to fill in the scratches in cylinder walls for better compression. Any information would be appreciated. Thanks.