Lamont, I have the greatest respect for you and your ilk. Your knowledge is first-rate and few can question what you post. Similarly, I respect Capt. Kirk who is using a contraversial product. All he is doiing is giving us his personal experience with said product, and his opinions on sludge formation. I also agree with his vision of the future, which could have been yesteryear if it could have been more profitable for big oil than the usual 5- to 8-thousand kilometer oil change intervals we enjoy up here in the Great White North. When that era arrives, we can expect to pay much more for permanant oils to make up for the lack of OCIs on new vehicles. I can recall when cars were assembled without grease nipples and at the time I was positive that it would mean big problems for my car. Of course, I have yet to experience such a problem.