I used regular oil, not synthetic, on my 92 Topaz and added this silver/black/red can of Engine restorer. The car only have 45k on it, but the stuff made the car a lot smoother. A buddy used the same stuff on his 2.2l Sunfire which has 80k on it and it also had the same results. I only have 35k miles on my 95 engine and 45k on the 99 so I dunno how well it works on the Duratecs. Anyone have any experience with this product?
