I had previousley thought I would do an arx cleaning on my 88 BII with 45k but I don't think it will be cost effective, I can see doing it if I had a high mileage vehicle and it was sludged, and I'm not knocking it but I just don't see the value in doing it on an engine that was only driven 3000 miles a year and was not usually taken on a lot of short trips. So what is the best over the counter engine flush available for my car? What products have you had good experiances with? I was thinking about the Amsoil Engine Flush although I'd have to get it online. Is this a good product?