I saw a link that was about an oil additive that prevents all wear of engine components. This oil additive lubricates the cylinder walls during cold startups. Never use synthetic oil again. This oil additive is amazing. It beats prolong and a multitude of other additives. I know a distributor that sells this product for $16.50 per bottle. sfrcorp.com/demonstration If you like what you see on this 11 minute demo, contact me @ gleason_d@sbcglobal.net titaniumspine