We have all heard of the idea to run a crankcase full of ATF for about 1,000 miles about every 50K miles in order to clean the engine, the idea being that the detergents in the ATF will break down deposits and they will come out. Is this a good idea? Have you done it with your own engine? Isn't ATF a little thin (nonviscous) to proplerly lubricate the bearings and what not? What do you say? See my beasts at <A target="_blank" HREF=http://www.bigerik.coloradoK5.com>http://www.bigerik.coloradoK5.com</A>.